Thematic Bible: Who became vain

This I say, therefore, and appeal to you solemnly in the Lord, that you no longer walk as the other Gentiles walk, in the error of their minds, darkened in their understanding, alienated from the life of God through the ignorance that is in them, because of the hardness of their heart; who, being past feeling, have given themselves up to licentiousness, that they may work all manner of uncleanness with greediness.

For the wrath of God is revealed from heaven against all ungodliness and unrighteousness of men, who, by unrighteousness, restrain the truth. Because that which may be known of God, is manifest among them; for God has made it manifest to them, (for, since the creation of the world, his attributes, which are invisible, are clearly seen, being perceived through the things that are made, both his eternal power and divinity,) that they may be without excuse; read more.
because, when they knew God, they did not glorify him as God, nor were they thankful; but they became perverse in their reasonings, and their wicked heart was darkened; professing to be wise, they became foolish, and exchanged the glory of the incorruptible God for an image like corruptible man, and birds, and four-footed beasts, and creeping things.