1:18-25 The apostle begins to show that all mankind need the salvation of the gospel, because none could obtain the favour of God, or escape his wrath by their own works. For no man can plead that he has fulfilled all his obligations to God and to his neighbour; nor can any truly say that he has fully acted up to the light afforded him. The sinfulness of man is described as ungodliness against the laws of the first table, and unrighteousness against those of the second. The cause of that sinfulness is holding the truth in unrighteousness. All, more or less, do what they know to be wrong, and omit what they know to be right, so that the plea of ignorance cannot be allowed from any. Our Creator's invisible power and Godhead are so clearly shown in the works he has made, that even idolaters and wicked Gentiles are left without excuse. They foolishly followed idolatry; and rational creatures changed the worship of the glorious Creator, for that of brutes, reptiles, and senseless images. They wandered from God, till all traces of true religion must have been lost, had not the revelation of the gospel prevented it. For whatever may be pretended, as to the sufficiency of man's reason to discover Divine truth and moral obligation, or to govern the practice aright, facts cannot be denied. And these plainly show that men have dishonoured God by the most absurd idolatries and superstitions; and have degraded themselves by the vilest affections and most abominable deeds.

24. Wherefore God also—in righteous retribution.

gave them up—This divine abandonment of men is here strikingly traced in three successive stages, at each of which the same word is used (Ro 1:24, 26; and Ro 1:28, where the word is rendered "gave over"). "As they deserted God, God in turn deserted them; not giving them divine (that is, supernatural) laws, and suffering them to corrupt those which were human; not sending them prophets, and allowing the philosophers to run into absurdities. He let them do what they pleased, even what was in the last degree vile, that those who had not honored God, might dishonor themselves" [Grotius].