Because, when they knew God, they glorified him not as God, neither were thankful; but became vain in their imaginations, and their foolish hearts were darkened.
All Commentaries on Romans 1:21 Go To Romans 1
John Chrysostom
AD 407
This is the greatest charge against the heathen, and the second is the fact that they worshiped idols. … The heathen tried to get to heaven, but having destroyed the light that was in them, instead entrusted themselves to the darkness of their own reasoning. They looked for the incorporeal in bodies and for the infinite in creaturely shapes, and so lost their congruity with the light.