What did the early Church teach and practice about baptism? In all the early Church documents we have, and there are lots, not one reference is made to "accepting Jesus Christ as your personal savior and "your saved" Not one . In 1500 years of Church history.
Baptism, adult and infant, was and is considered to be the Sacrament of faith. We Become children of God. "born again" through the waters of baptism.
One key Scripture reference to being "born again" or "regenerated" is John 3:5, where Jesus says, "Truly, truly, I say to you, unless one is born of water and the Spirit, he cannot enter the kingdom of God."
This verse is so important that those who say baptism is just a symbol must deny that Jesus here refers to baptism. "Born again" Christians claim the "water" is the preached word of God.
But the early Christians uniformly identified this verse with baptism. Water baptism is the way, they said, that we are born again and receive new life—a fact that is supported elsewhere in Scripture (Rom. 6:3–4; Col. 2:12–13; Titus 3:5).
No Church Father referred to John 3:5 as anything other than water baptism.
Justin Martyr
"As many as are persuaded and believe that what we [Christians] teach and say is true, and undertake to be able to live accordingly, and instructed to pray and to entreat God with fasting, for the remission of their sins that are past, we pray and fast with them. Then they are brought by us where there is water and are regenerated in the same manner in which we were ourselves regenerated. For, in the name of God, the Father . . . and of our Savior Jesus Christ, and of the Holy Spirit [Matt. 28:19], they then receive the washing with water. For Christ also said, ‘Unless you are born again, you shall not enter into the kingdom of heaven’ [John 3:3]" (First Apology 61 [A.D. 151]).
Irenaeus
"‘And [Naaman] dipped himself . . . seven times in the Jordan’ [2 Kgs. 5:14]. It was not for nothing that Naaman of old, when suffering from leprosy, was purified upon his being baptized, but [this served] as an indication to us. For as we are lepers in sin, we are made clean, by means of the sacred water and the invocation of the Lord, from our old transgressions, being spiritually regenerated as newborn babes, even as the Lord has declared: ‘Except a man be born again through water and the Spirit, he shall not enter into the kingdom of heaven’" (Fragment 34 [A.D. 190]).
Tertullian
"[N]o one can attain salvation without baptism, especially in view of the declaration of the Lord, who says, ‘Unless a man shall be born of water, he shall not have life’" (Baptism 12:1 [A.D. 203]).
Hippolytus
"The Father of immortality sent the immortal Son and Word into the world, who came to man in order to wash him with water and the Spirit; and he, begetting us again to incorruption of soul and body, breathed into us the Spirit of life, and endued us with an incorruptible panoply. If, therefore, man has become immortal, he will also be God. And if he is made God by water and the Holy Spirit after the regeneration of the laver he is found to be also joint-heir with Christ after the resurrection from the dead. Wherefore I preach to this effect: Come, all ye kindreds of the nations, to the immortality of the baptism" (Discourse on the Holy Theophany 8 [A.D. 217]).
The Recognitions of Clement
"But you will perhaps say, ‘What does the baptism of water contribute toward the worship of God?’ In the first place, because that which has pleased God is fulfilled. In the second place, because when you are regenerated and born again of water and of God, the frailty of your former birth, which you have through men, is cut off, and so . . . you shall be able to attain salvation; but otherwise it is impossible. For thus has the true prophet [Jesus] testified to us with an oath: ‘Verily, I say to you, that unless a man is born again of water . . . he shall not enter into the kingdom of heaven’" (The Recognitions of Clement 6:9 [A.D. 221]).
Testimonies Concerning the Jews
"That unless a man have been baptized and born again, he cannot attain unto the kingdom of God. In the Gospel according to John: ‘Except a man be born again of water and the Spirit, he cannot enter into the kingdom of God’ [John 3:5]. . . . Also in the same place: ‘Unless ye eat the flesh of the Son of man, and drink his blood, ye shall not have life in you’ [John 6:53]. That it is of small account to be baptized and to receive the Eucharist, unless one profit by it both in deeds and works" (Testimonies Concerning the Jews 3:2:25–26 [A.D. 240]).
Cyprian of Carthage
"[When] they receive also the baptism of the Church . . . then finally can they be fully sanctified and be the sons of God . . . since it is written, ‘Except a man be born again of water and of the Spirit, he cannot enter into the kingdom of God’" (Letters 71[72]:1 [A.D. 253]).
Council of Carthage VII
"And in the gospel our Lord Jesus Christ spoke with his divine voice, saying, ‘Except a man be born again of water and the Spirit, he cannot enter the kingdom of God.’ . . . Unless therefore they receive saving baptism in the Catholic Church, which is one, they cannot be saved, but will be condemned with the carnal in the judgment of the Lord Christ" (Seventh Carthage [A.D. 256]).