The Grace of Regeneration Washes Away All Past Sin and All Original Guilt
Now in whichever of these four stages (as we may call them) the grace of regeneration finds any particular man, all his past sins are there and then pardoned, and the guilt which he contracted in his birth is removed in his new birth; and so true is it that “the wind blows where it lists,” that some have never known the second stage, that of slavery under the law, but have received the divine assistance as soon as they received the commandment.
Source: The Enchiridion (New Advent)