John Chrysostom

What he says, amounts to this nearly. What armed death against the world? The one man's eating from the tree only. If then death attained so great power from one offence, when it is found that certain received a grace and righteousness out of all proportion to that sin, how shall they still be liable to death? And for this cause, he does not here say "grace," but "superabundance of grace." For it was not as much as we must have to do away the sin only, that we received of His grace, but even far more. …

Homily on Romans X ↗

Theophylact of Ohrid

If because one man ate from the forbidden tree, death came to reign, then how much more shall we, who have received the abundance and surplus of grace and have been justified, live and reign "through the one Jesus Christ," whose brethren we are, with whom we have been joined into one body, with whom we have been united as a body with its head. For we received not a simple or uniform good, so that there would still remain for us the possibility of doubting regarding the future: our blessings are the fruit of abundant grace. …

Commentary on Romans ↗

Irenaeus

Concurring with these statements, Paul, speaking to the Romans, declares: "Much more they who receive abundance of grace and righteousness for [eternal] life, shall reign by one, Christ Jesus." It follows from this, that he knew nothing of that Christ who flew away from Jesus; nor did he of the Saviour above, whom they hold to be impassible. …

Against Heresies Book III ↗

Thomas Aquinas

Then when he says, for if by one man's offense, he proves what he has said, namely, that Christ's grace passes from many sins to justice. First, he proves this from something later; second, from something earlier, at for as by the disobedience. In regard to the first it should be noted that in the foregoing comparison the Apostle does not posit things that correspond, i.e., things of the same class. …

Commentary on Romans ↗