Theophylact of Ohrid — on Rom 5:19 (Commentary on Romans)

“Here, it would seem, there is a repetition; but in reality there is none. Above he said (Rom. 5:18): "as by the offense of one judgment came upon all men to condemnation, so by the righteousness of one the free gift came upon all men unto justification," and now he explains what the transgression of the one consisted of, and says that it was disobedience, through which many were made sinners, that is, subject to punishment and condemned to death; he also explains what the righteousness of the One, that is, of Christ, consists of, and says that it is obedience even unto death, and the death of the cross, through which obedience death was destroyed and we were freed from condemnation to it.”