Acts 17:22-23

So Paul, standing in the center of the Areopagus, said: “Men of Athens, I observe [with every turn I make throughout the city] that you are very religious and devout in all respects. Now as I was going along and carefully looking at your objects of worship, I came to an altar with this inscription: ‘TO AN UNKNOWN GOD.’ Therefore what you already worship as unknown, this I proclaim to you.