I think the best example is here (notice especially, St. Paul also says the pagan poets have described the true God as well as those with the altar--also notice the distinction between idols--contingent beings--and the true God, Creator of which all else has its being):
Acts 17:22 But Paul standing in the midst of the Areopagus, said: Ye men of Athens, I perceive that in all things you are too superstitious. 23 For passing by, and seeing your idols, I found an altar also, on which was written: To the unknown God. What therefore you worship, without knowing it, that I preach to you: 24 God, who made the world, and all things therein; he, being Lord of heaven and earth, dwelleth not in temples made with hands; 25 Neither is he served with men's hands, as though he needed any thing; seeing it is he who giveth to all life, and breath, and all things: 26 And hath made of one, all mankind, to dwell upon the whole face of the earth, determining appointed times, and the limits of their habitation. 27 That they should seek God, if happily they may feel after him or find him, although he be not far from every one of us: 28For in him we live, and move, and are; as some also of your own poets said: For we are also his offspring.
Here is another good passage:
Rom. 1:19 Because that which is known of God is manifest in them. For God hath manifested it unto them. 20 For the invisible things of him, from the creation of the world, are clearly seen, being understood by the things that are made; his eternal power also, and divinity: so that they are inexcusable. 21 Because that, when they knew God, they have not glorified him as God, or given thanks; but became vain in their thoughts, and their foolish heart was darkened. 22 For professing themselves to be wise, they became fools. 23 And they changed the glory of the incorruptible God into the likeness of the image of a corruptible man, and of birds, and of fourfooted beasts, and of creeping things.