John Chrysostom
As though praising them, he seems to say nothing unpleasant to them.
"Then Paul stood in the midst of the Areopagus and said, Men of Athens, I perceive that in all things you are, as it were, especially religious. For as I passed by and observed your objects of worship..."
He did not directly say "idols." As a preface to his speech, he said, "I perceive that you are, as it were, especially religious," because of the altar mentioned (Acts 17:23).
He found an altar on which was written, "To an unknown God." Who was this unknown God, if not Christ?
You have seen how soundly he changed the name. You have seen how he took the inscription captive, not for the harm of those who wrote it, but for their salvation and care.
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What then? Does he say that the Athenians wrote this for Christ? If the Athenians had written it for Christ, Paul's success would not have been so wondrous.
What is wondrous is that they wrote this with one intention, while he had power to change it into another.
First it is necessary to say for whom the Athenians wrote, "To an unknown God." They had many gods and still more divinities, for "all the gods of the nations are idols" (Ps 95:5), both local and foreign.
You see what mockery this is. If there is a god, he cannot be foreign, because he is master of the whole universe.
Some gods they had received from their fathers, others from neighboring peoples, from the Scythians, Thracians, and Egyptians.
What then? They erected an altar and wrote, "To an unknown God." By such an inscription they said, "If there is also another god not yet known to us, let us honor him."
See what superstition this is. Therefore Paul first says, "I perceive that in all things you are, as it were, especially religious."
This means, "You honor not only the divinities known to you, but also those not known to you." For this reason they wrote, "To an unknown God."
For the unknown God is none other than Christ.