Therefore we are buried with him by baptism into death: that just as Christ was raised up from the dead by the glory of the Father, even so we also should walk in newness of life.
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Ambrose of Milan
AD 397
Baptism is a likeness of death when you go down into the water, and when you rise again it becomes a likeness of resurrection. Thus, according to the interpretation of the apostle, just as Christ’s resurrection was a regeneration, so the resurrection from the font is also a regeneration. .
First of all, this means that Christ raised his own body from the dead. For he is the power of God the Father, as he said: “Destroy this temple and I will raise it again in three days.” He was saying this about the temple of his own body…. It also means that we now have a new way of life which has been given to us by Christ. For by baptism we have been buried together with Christ in order that we may henceforth live according to the life into which Christ rose from the dead. Therefore baptism is the sign and symbol of the resurrection, which means that we ought to abide in the commandments of Christ and not go back to what we were before. For the person who dies does not sin; death is the end of sin. This is symbolized by water, because just as water cleanses the dirt of the body, so we believe that we have been spiritually cleansed by baptism from every sin and renewed, for what is incorporeal is cleansed invisibly. Commentary on Paul’s Epistles.
As we have been buried, so we must rise with Christ in a spiritual sense. For if to be buried together with Christ means dying to sin, then it is clear that rising with him means living in righteousness. .
As Jesus died in taking away the sins of the world, that, by doing sin to death, he might rise in righteousness, so too, when you go down into the water and are, in a fashion, entombed in the water as he was in the rock, you may rise again to walk “in newness of life.”
Here Paul hints at the subject of the resurrection along with the duty of a careful walk. In what way? He means: Do you believe that Christ died and that he rose again? If so, then believe that the same will happen to you…. For if you have shared in his cross and burial, how much more will you share in his resurrection as well? For now that the greater is done away with (i.e., sin), it is not right to go on doubting about the lesser, viz., the doing away of death.
But the image of the heavenly is the resurrection from the dead, and in corruption, in order that "as Christ was raised up from the dead by the glory of the Father, so we also should walk in newness of life."
Every soul, then, by reason of its birth, has its nature in Adam until it is born again in Christ; moreover, it is unclean all the while that it remains without this regeneration;
Every soul, by reason of its birth, has its nature in Adam until it is born again in Christ; moreover, it is unclean as long as it remains without this regeneration, and because it is unclean it is actively sinful and infects even the flesh with its shame, because of their fusion.