Acts 17
Paul and Silas had a good run in Thessalonica but were chased out eventually. When they came to Berea, these Jews accepted Paul's Gospel because it accorded with the Scriptures, the Old Testament. Be good Bereans and check your Scriptures, don't just believe any old wind that blows.
Paul is taken to Athens and then to the Areopagus, Mars Hill. The Areopagus was where the Athenian elders would meet to govern the city. They believed their goddess Athena presided over the hill. In the great Theban plays, Oedipus' final resting place was near Mars Hill. If you know the history of the philosophical movement, from the pre-Socratics through Aristotle, you'll understand verse 21; every philosopher would come along and advance his new thesis, only for the next one to come along and "refute" the previous one, it was a never-ending cycle of new ideas, not unlike what you see in liberal academic circles these days.
Paul was provoked in his heart by their idolatry and one of the prominent themes of his preaching was to correct them of it. Away with the images. Second, notice Paul's proof for the judgment; it is the resurrection. Many people in our day ask what is the proof for the resurrection. This is all wrong. The resurrection is the proof. To them I say, show me the proof that Jesus is still in the grave.
Even though Paul went after their icons, the Greeks mainly had a problem with the concept of the resurrection. This is because a harsh dualism between the physical and the spiritual was a common theme in all Greek philosophy, which would carry over to the Gnostic sects. To them, the body was something to be escaped from, only the spirit counted. But the Apostles, and indeed the Prophets before them, taught both a physical and spiritual resurrection.
A few centuries after the New Testament, a spurious work came into prominence. It was alleged to have been written by Dyonysius the Areopagite. It is now known that this is a pseudepigraphical work called Pseudo-Dionysius. It was almost impossible to detect this kind of thing in the early church, unfortunately so, since this work became fairly influential and influenced Christian doctrine, and not for the better, into a solidly Neo-Platonic direction. One of the benefits of Sola Scriptura is that you don't have to believe in fraudulent documents just because they're considered as "tradition." It is very easy these days to look back and see what was pseudepigraphical and what was the genuine article.