Romans 1:19
because what can be known of God is manifest among them; for God has manifested [himself] to them.
Romans 1:20
For his invisible [attributes] are clearly seen from the creation of the world, being perceived by the things which are made, even his eternal power and deity, so that they have no defense,
John 1:9
The light was the true [light] which lights every man that comes into the world.
Acts 14:16-17
who in past generations permitted all nations to walk in their own ways;
Acts 17:23-30
For as I passed through, and observed your objects of worship, I found also an altar on which was inscribed, TO AN UNKNOWN GOD. What therefore you worship as unknown, this I declare to you.