Creeds & Confessions of Christendom:
Genevan Book of Church Order (1556): "[Covenant children are] contained under the name of God's people ... Remission of sins in the blood of Christ Jesus doth appertain unto them by God's promise ... Paul ... pronounceth the children begotten and born (either of the parents being faithful) to be clean and holy [1Cor. 7:14] ... The Holy Ghost assures us that infants be of the number of God's people and that remission of sins doth also appertain to them in Christ ... Almighty God [is] their Father. [They are] His children bought with the blood of His dear Son."
French Confession (1559): “We confess only two sacraments common to the whole church, of which the first, baptism, is given as a pledge of our adoption; for by it we are grafted into the body of Christ, so as to be washed and cleansed by his blood, and then renewed in purity of life by his Holy Spirit. We hold, also, that although we are baptized only once, yet the gain that it symbolizes to us reaches over our whole lives and to our death, so that we have a lasting witness that Jesus Christ will always be our justification and sanctification. Nevertheless, although it is a sacrament of faith and penitence, yet as God receives little children into the Church with their fathers, we say, upon the authority of Jesus Christ, that the children of believing parents should be baptized” (article 35).
Belgic Confession (1561): “Therefore we detest the error of the Anabaptists, who are not content with the one only baptism they have once received, and moreover condemn the baptism of the infants of believers, who we believe ought to be baptized and sealed with the sign of the covenant, as the children in Israel formerly were circumcised upon the same promises which are made unto our children. And indeed Christ shed His blood no less for the washing of the children of believers than for adult persons; and therefore they ought to receive the sign and sacrament of that which Christ has done for them; as the Lord commanded in the law that they should be made partakers of the sacrament of Christ's suffering and death shortly after they were born, by offering for them a lamb, which was a sacrament of Jesus Christ. Moreover, what circumcision was to the Jews, baptism is to our children. And for this reason St. Paul calls baptism the circumcision of Christ” (article 34).
Heidelberg Catechism (1563): “Are infants also to be baptized? Yes, for since they, as well as their parents, belong to the covenant and people of God, and through the blood of Christ both redemption from sin and the Holy Ghost, who works faith, are promised to them no less than to their parents, they are also by baptism, as a sign of the covenant, to be ingrafted into the Christian church, and distinguished from the children of unbelievers, as was done in the Old Testament by circumcision, in place of which in the New Testament baptism is appointed” (Q. & A. 74).
Thirty-Nine Articles of Religion (1563, 1571): “Baptism is not only a sign of profession, and mark of difference, whereby Christian men are discerned from others that be not christened, but it is also a sign of regeneration or new birth, whereby, as by an instrument, they that receive baptism rightly are grafted into the church; the promises of the forgiveness of sin, and of our adoption to be the sons of God by the Holy Ghost, are visibly signed and sealed; faith is confirmed, and grace increased by virtue of prayer unto God. The baptism of young children is in any wise to be retained in the Church, as most agreeable with the institution of Christ” (article 26).
Second Helvetic Confession (1566): “We condemn the Anabaptists, who deny that newborn infants of the faithful are to be baptized. For according to evangelical teaching, of such is the Kingdom of God (Luke 18:16), and they are in the covenant of God (Acts 3:25). Why, then, should the sign of God's covenant not be given to them? Why should those who belong to God and are in his Church not be initiated by holy baptism?” (chapter 20).
Canons of Dordt (1618-1619): "…the children of believers are holy not by nature but by virtue of the covenant of grace in which they, together with the parents, are comprehended. Godly parents have no reason to doubt the election and salvation of those their children whom it pleases God to call out of this life in their infancy (I Cor. 7:14; Gen. 17:7; Isa. 59:21; Acts 2:39)" (I:17).
Form for the Administration of Baptism: "Holy baptism witnesseth and sealeth unto us the washing away of our sins through Jesus Christ. Therefore we are baptized in the name of the Father, and of the Son, and of the Holy Ghost. For when we are baptized in the name of the Father, God the Father witnesseth and sealeth unto us, that he doth make an eternal covenant of grace with us, and adopts us for his children and heirs, and therefore will provide us with every good thing, and avert all evil or turn it to our profit. And when we are baptized in the name of the Son, the Son sealeth unto us, that he doth wash us in his blood from all our sins, incorporating us into the fellowship of his death and resurrection, so that we are freed from all our sins, and accounted righteous before God. In like manner, when we are baptized in the name of the Holy Ghost, the Holy Ghost assures us, by this holy sacrament, that he will dwell in us, and sanctify us to be members of Christ, applying unto us, that which we have in Christ, namely, the washing away of our sins, and the daily renewing of our lives, till we shall finally be presented without spot or wrinkle among the assembly of the elect in life eternal ... And although our young children do not understand these things, we may not therefore exclude them from baptism, for as they are without their knowledge, partakers of the condemnation in Adam, so are they again received unto grace in Christ; as God speaketh unto Abraham, the Father of all the faithful, and therefore unto us and our children (Gen. 17:7), saying, 'I will establish my covenant between me and thee, and thy seed after thee, in their generations, for an everlasting covenant; to be a God unto thee, and to thy seed after thee. ' This also the Apostle Peter testifieth, with these words (Acts 2:39), 'For the promise is unto you and to your children, and to all that are afar off, even as many as the Lord our God shall call.' Therefore God formerly commanded them to be circumcised, which was a seal of the covenant, and of the righteousness of faith; and therefore Christ also embraced them, laid his hands upon them and blessed them (Mark 10). Since then baptism is come in the place of circumcision, therefore infants are to be baptized as heirs of the kingdom of God, and of his covenant. And parents are in duty bound, further to instruct their children herein, when they shall arrive to years of discretion ... although our children are conceived and born in sin, and therefore are subject to all miseries, yea, to condemnation itself; yet that they are sanctified [Eze. 16:21; I Cor. 7:14] in Christ, and therefore, as members of his Church ought to be baptized ... Almighty God and merciful Father, we thank and praise thee, that thou hast forgiven us, and our children, all our sins, through the blood of thy beloved Son Jesus Christ, and received us through thy Holy Spirit as members of thine only begotten Son, and adopted us to be thy children, and sealed and confirmed the same unto us by holy baptism."
The Directory of Public Worship (approved by the Westminster Assembly): “That it [baptism] is instituted by our Lord Jesus Christ: That it is a seal of the covenant of grace, of our ingrafting into Christ, and of our union with him, of remission of sins, regeneration, adoption, and life eternal: That the water, in baptism, representeth and signifieth both the blood of Christ, which taketh away all guilt of sin, original and actual; and the sanctifying virtue of the Spirit of Christ against the dominion of sin, and the corruption of our sinful nature: That baptizing, or sprinkling and washing with water, signifieth the cleansing from sin by the blood and for the merit of Christ, together with the mortification of sin, and rising from sin to newness of life, by virtue of the death and resurrection of Christ: That the promise is made to believers and their seed; and that the seed and posterity of the faithful, born within the church, have, by their birth, interest in the covenant, and right to the seal of it, and to the outward privileges of the church, under the gospel, no less than the children of Abraham in the time of the Old Testament; the covenant of grace, for substance, being the same; and the grace of God, and the consolation of believers, more plentiful than before: That the Son of God admitted little children into his presence, embracing and blessing them, saying, For of such is the kingdom of God: That children, by baptism, are solemnly received into the bosom of the visible church, distinguished from the world, and them that are without, and united with believers; and that all who are baptized in the name of Christ, do renounce, and by their baptism are bound to fight against the devil, the world, and the flesh: That they are Christians, and federally holy before baptism, and therefore are they baptized.”
The Westminster Confession of Faith (1646):
I. Baptism is a sacrament of the New Testament, ordained by Jesus Christ, not only for the solemn admission of the party baptized into the visible Church, but also to be unto him a sign and seal of the covenant of grace, of his ingrafting into Christ, of regeneration, of remission of sins, and of his giving up unto God, through Jesus Christ, to walk in newness of life: which sacrament is, by Christ's own appointment, to be continued in his Church until the end of the world.
II. The outward element to be used in the sacrament is water, wherewith the party is to be baptized in the name of the Father, and of the Son, and of the Holy Ghost, by a minister of the gospel, lawfully called thereunto.
III. Dipping of the person into the water is not necessary; but baptism is rightly administered by pouring or sprinkling water upon the person.
IV. Not only those that do actually profess faith in and obedience unto Christ, but also the infants of one or both believing parents are to be baptized.
V. Although it be a great sin to contemn or neglect this ordinance, yet grace and salvation are not so inseparably annexed unto it as that no person can be regenerated or saved without it, or that all that are baptized are undoubtedly regenerated.
VI. The efficacy of baptism is not tied to that moment of time wherein it is administered; yet, notwithstanding, by the right use of this ordinance, the grace promised is not only offered, but really exhibited and conferred by the Holy Ghost, to such (whether of age or infants) as that grace belongeth unto, according to the counsel of God's own will, in his appointed time.
VII. The sacrament of Baptism is but once to be administered to any person.
French Confession (1559): “We confess only two sacraments common to the whole church, of which the first, baptism, is given as a pledge of our adoption; for by it we are grafted into the body of Christ, so as to be washed and cleansed by his blood, and then renewed in purity of life by his Holy Spirit. We hold, also, that although we are baptized only once, yet the gain that it symbolizes to us reaches over our whole lives and to our death, so that we have a lasting witness that Jesus Christ will always be our justification and sanctification. Nevertheless, although it is a sacrament of faith and penitence, yet as God receives little children into the Church with their fathers, we say, upon the authority of Jesus Christ, that the children of believing parents should be baptized” (article 35).
Belgic Confession (1561): “Therefore we detest the error of the Anabaptists, who are not content with the one only baptism they have once received, and moreover condemn the baptism of the infants of believers, who we believe ought to be baptized and sealed with the sign of the covenant, as the children in Israel formerly were circumcised upon the same promises which are made unto our children. And indeed Christ shed His blood no less for the washing of the children of believers than for adult persons; and therefore they ought to receive the sign and sacrament of that which Christ has done for them; as the Lord commanded in the law that they should be made partakers of the sacrament of Christ's suffering and death shortly after they were born, by offering for them a lamb, which was a sacrament of Jesus Christ. Moreover, what circumcision was to the Jews, baptism is to our children. And for this reason St. Paul calls baptism the circumcision of Christ” (article 34).
Heidelberg Catechism (1563): “Are infants also to be baptized? Yes, for since they, as well as their parents, belong to the covenant and people of God, and through the blood of Christ both redemption from sin and the Holy Ghost, who works faith, are promised to them no less than to their parents, they are also by baptism, as a sign of the covenant, to be ingrafted into the Christian church, and distinguished from the children of unbelievers, as was done in the Old Testament by circumcision, in place of which in the New Testament baptism is appointed” (Q. & A. 74).
Thirty-Nine Articles of Religion (1563, 1571): “Baptism is not only a sign of profession, and mark of difference, whereby Christian men are discerned from others that be not christened, but it is also a sign of regeneration or new birth, whereby, as by an instrument, they that receive baptism rightly are grafted into the church; the promises of the forgiveness of sin, and of our adoption to be the sons of God by the Holy Ghost, are visibly signed and sealed; faith is confirmed, and grace increased by virtue of prayer unto God. The baptism of young children is in any wise to be retained in the Church, as most agreeable with the institution of Christ” (article 26).
Second Helvetic Confession (1566): “We condemn the Anabaptists, who deny that newborn infants of the faithful are to be baptized. For according to evangelical teaching, of such is the Kingdom of God (Luke 18:16), and they are in the covenant of God (Acts 3:25). Why, then, should the sign of God's covenant not be given to them? Why should those who belong to God and are in his Church not be initiated by holy baptism?” (chapter 20).
Canons of Dordt (1618-1619): "…the children of believers are holy not by nature but by virtue of the covenant of grace in which they, together with the parents, are comprehended. Godly parents have no reason to doubt the election and salvation of those their children whom it pleases God to call out of this life in their infancy (I Cor. 7:14; Gen. 17:7; Isa. 59:21; Acts 2:39)" (I:17).
Form for the Administration of Baptism: "Holy baptism witnesseth and sealeth unto us the washing away of our sins through Jesus Christ. Therefore we are baptized in the name of the Father, and of the Son, and of the Holy Ghost. For when we are baptized in the name of the Father, God the Father witnesseth and sealeth unto us, that he doth make an eternal covenant of grace with us, and adopts us for his children and heirs, and therefore will provide us with every good thing, and avert all evil or turn it to our profit. And when we are baptized in the name of the Son, the Son sealeth unto us, that he doth wash us in his blood from all our sins, incorporating us into the fellowship of his death and resurrection, so that we are freed from all our sins, and accounted righteous before God. In like manner, when we are baptized in the name of the Holy Ghost, the Holy Ghost assures us, by this holy sacrament, that he will dwell in us, and sanctify us to be members of Christ, applying unto us, that which we have in Christ, namely, the washing away of our sins, and the daily renewing of our lives, till we shall finally be presented without spot or wrinkle among the assembly of the elect in life eternal ... And although our young children do not understand these things, we may not therefore exclude them from baptism, for as they are without their knowledge, partakers of the condemnation in Adam, so are they again received unto grace in Christ; as God speaketh unto Abraham, the Father of all the faithful, and therefore unto us and our children (Gen. 17:7), saying, 'I will establish my covenant between me and thee, and thy seed after thee, in their generations, for an everlasting covenant; to be a God unto thee, and to thy seed after thee. ' This also the Apostle Peter testifieth, with these words (Acts 2:39), 'For the promise is unto you and to your children, and to all that are afar off, even as many as the Lord our God shall call.' Therefore God formerly commanded them to be circumcised, which was a seal of the covenant, and of the righteousness of faith; and therefore Christ also embraced them, laid his hands upon them and blessed them (Mark 10). Since then baptism is come in the place of circumcision, therefore infants are to be baptized as heirs of the kingdom of God, and of his covenant. And parents are in duty bound, further to instruct their children herein, when they shall arrive to years of discretion ... although our children are conceived and born in sin, and therefore are subject to all miseries, yea, to condemnation itself; yet that they are sanctified [Eze. 16:21; I Cor. 7:14] in Christ, and therefore, as members of his Church ought to be baptized ... Almighty God and merciful Father, we thank and praise thee, that thou hast forgiven us, and our children, all our sins, through the blood of thy beloved Son Jesus Christ, and received us through thy Holy Spirit as members of thine only begotten Son, and adopted us to be thy children, and sealed and confirmed the same unto us by holy baptism."
The Directory of Public Worship (approved by the Westminster Assembly): “That it [baptism] is instituted by our Lord Jesus Christ: That it is a seal of the covenant of grace, of our ingrafting into Christ, and of our union with him, of remission of sins, regeneration, adoption, and life eternal: That the water, in baptism, representeth and signifieth both the blood of Christ, which taketh away all guilt of sin, original and actual; and the sanctifying virtue of the Spirit of Christ against the dominion of sin, and the corruption of our sinful nature: That baptizing, or sprinkling and washing with water, signifieth the cleansing from sin by the blood and for the merit of Christ, together with the mortification of sin, and rising from sin to newness of life, by virtue of the death and resurrection of Christ: That the promise is made to believers and their seed; and that the seed and posterity of the faithful, born within the church, have, by their birth, interest in the covenant, and right to the seal of it, and to the outward privileges of the church, under the gospel, no less than the children of Abraham in the time of the Old Testament; the covenant of grace, for substance, being the same; and the grace of God, and the consolation of believers, more plentiful than before: That the Son of God admitted little children into his presence, embracing and blessing them, saying, For of such is the kingdom of God: That children, by baptism, are solemnly received into the bosom of the visible church, distinguished from the world, and them that are without, and united with believers; and that all who are baptized in the name of Christ, do renounce, and by their baptism are bound to fight against the devil, the world, and the flesh: That they are Christians, and federally holy before baptism, and therefore are they baptized.”
The Westminster Confession of Faith (1646):
I. Baptism is a sacrament of the New Testament, ordained by Jesus Christ, not only for the solemn admission of the party baptized into the visible Church, but also to be unto him a sign and seal of the covenant of grace, of his ingrafting into Christ, of regeneration, of remission of sins, and of his giving up unto God, through Jesus Christ, to walk in newness of life: which sacrament is, by Christ's own appointment, to be continued in his Church until the end of the world.
II. The outward element to be used in the sacrament is water, wherewith the party is to be baptized in the name of the Father, and of the Son, and of the Holy Ghost, by a minister of the gospel, lawfully called thereunto.
III. Dipping of the person into the water is not necessary; but baptism is rightly administered by pouring or sprinkling water upon the person.
IV. Not only those that do actually profess faith in and obedience unto Christ, but also the infants of one or both believing parents are to be baptized.
V. Although it be a great sin to contemn or neglect this ordinance, yet grace and salvation are not so inseparably annexed unto it as that no person can be regenerated or saved without it, or that all that are baptized are undoubtedly regenerated.
VI. The efficacy of baptism is not tied to that moment of time wherein it is administered; yet, notwithstanding, by the right use of this ordinance, the grace promised is not only offered, but really exhibited and conferred by the Holy Ghost, to such (whether of age or infants) as that grace belongeth unto, according to the counsel of God's own will, in his appointed time.
VII. The sacrament of Baptism is but once to be administered to any person.
Sola gratia | Sola fide | Solus Christus | Soli Deo gloria | Sola scriptura