Baptism as a Requirement for Salvation in Christianity

Sources

1. I Peter “I Peter 3:21 (BBE) — And baptism, of which this is an image, now gives you salvation, not by washing clean the flesh, but by making you free from the sense of sin before God, through the coming again of Jesus Christ from the dead;”
2. 1 Peter “1 Peter 3:21 (NASB) — Corresponding to that, baptism now saves you--not the removal of dirt from the flesh, but an appeal to God for a good conscience--through the resurrection of Jesus Christ,”
3. CCEL (Reformed (Old Princeton)) “Charles Hodge, Systematic Theology, Vol. 3, section 65: the worshippers of the true God; and it secured for him the privileges of the theocracy. In like manner, baptism does not make a man a Christian. It is the appointed means of avowing that he is a Christian; it is the badge of his Christian profession before men, it secures for him the privileges of membership in the visible Church, and it is a pledge on the part of God that, if sincere and faithful, he shall partake of all the benefits of the redemption of Christ. It is only in this sense that the Reformed Church teaches the necessity of ”
4. Luke (Methodist/Wesleyan) “Adam Clarke on Luke 3:21: Jesus - being baptized - See on Mat 3:16, Mat 3:17 (note).”
5. theology (Catholic (Scholastic)) “Aquinas, Summa Theologica, Third Part (Tertia Pars), Of the Sacrament of the Eucharist, Art. 3: Article: Whether the Eucharist is necessary for salvation? I answer that, Two things have to be considered in this sacrament, namely, the sacrament itself, and what is contained in it. Now it was stated above (Article [1], Objection [2]) that the reality of the sacrament is the unity of the mystical body, without which there can be no salvation; for there is no entering into salvation outside the Church, just as in the time of the deluge there was none outside the Ark, which denotes the Church, acc”
6. Romans (Methodist/Wesleyan) “Adam Clarke on Romans 6:3: Know ye not, etc. - Every man who believes the Christian religion, and receives baptism as the proof that he believes it, and has taken up the profession of it, is bound thereby to a life of righteousness. To be baptized into Christ, is to receive the doctrine of Christ crucified, and to receive baptism as a proof of the genuineness of that faith, and the obligation to live according to its precepts. Baptized into his death? - That, as Jesus Christ in his crucifixion died completely, so that no spark of the natural or animal life remained in his body, so those who pr”
7. 1 Peter (Nonconformist/Puritan) “Matthew Henry on 1 Peter 3:21: Noah's salvation in the ark upon the water prefigured the salvation of all good Christians in the church by baptism; that temporal salvation by the ark was a type, the antitype whereunto is the eternal salvation of believers by baptism, to prevent mistakes about which the apostle, I. Declares what he means by saving baptism; not the outward ceremony of washing with water, which, in itself, does no more than put away the filth of the flesh, but it is that baptism wherein there is a faithful answer or restipulation of a resolved good conscience, engaging to believe”
8. Romans (Protestant academic) “Tyndale House on Romans 6:3: 6:3 Baptism is the rite of initiation into the Christian faith (see Acts 2:38, 41). It sometimes symbolizes the entire conversion experience, so Paul refers to baptism as the means through which believers are joined to Christ in his death and resurrection (see also Rom 6:4). However, baptism has no value apart from faith.”
9. Schaff ANF/NPNF (Patristic) “ANF Vol 3: Tertullian — CHAP. XII.--OF THE NECESSITY OF BAPTISM TO SALVATION. (part 1): When, however, the prescript is laid down that "without baptism, salvation is attainable 675 by none" (chiefly on the ground of that declaration of the Lord, who says, "Unless one be born of water, he hath not life"[1]), there arise immediately scrupulous, nay rather audacious, doubts on the part of some, "how, in accordance with that prescript, salvation is attainable by the apostles, whom--Paul excepted-we do not find baptized in the Lord? Nay, since Paul is the only one of them who has put on the garment”
10. Augsburg Confession (Lutheran) “Augsburg Confession (Lutheran, 1530), 1 Of Baptism they teach that it is necessary 2 to salvation,: 1 Of Baptism they teach that it is necessary 2 to salvation, and that through Baptism is offered the grace of God, and that children are to be baptized who, being offered to God through Baptism are received into God’s grace.”
11. Thirty-Nine Articles of Religion (Anglican) “Thirty-Nine Articles of Religion (Anglican, 1571), Section 269: 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 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 reta”
12. Romans (Baptist/Reformed) “John Gill on Romans 6:3: Know ye not that so many of us as, You must know this, you cannot be ignorant of it, that whoever were baptized into Jesus Christ, were baptized into his death: and therefore must be dead to sin, and consequently ought not to live, nor can they live in sin. This does not suppose, that some of this church were baptized persons, and others not; but that some might be baptized in water who were not baptized into Christ: there is a difference between being baptized in water in the name of Christ, and being baptized into Christ, which believers in their baptism are; by wh”