Thematic Bible: Who became vain

This I say, therefore, and testify in the Lord, that ye henceforth walk not as other gentiles walk; in vanity of their mind, blinded in their understanding, being strangers from the life which is in God, through the ignorance that is in them, because of the blindness of their hearts. Which, being past repentance, have given themselves unto wantonness, to work all manner of uncleanness even with greediness.

For the wrath of God appeareth from heaven against all ungodliness and unrighteousness of men which withhold the truth in unrighteousness. Seeing what may be known of God, that same is manifest among them: For God did show it unto them. So that his invisible things, that is to say, his eternal power and godhead, are understood and seen by the works from the creation of the world. So that they are without excuse, read more.
inasmuch as when they knew God, they glorified him not as God, neither were thankful: but waxed full of vanities in their imaginations. And their foolish hearts were blinded. When they counted themselves wise, they became fools and turned the glory of the immortal God, unto the similitude of the image: of mortal man, and of birds, and four footed beasts and of serpents.