Romans 1:19
because that which is known of God is manifest in them; for God has revealed it to them:
Romans 1:20
for the invisible things of Him from the creation of the world are seen, being known by the things which are made, even His eternal power and divinity; so that they are without excuse:
John 1:9
That was the true light, which lighteth every man, coming into the world.
Acts 14:16-17
who in bygone generations, suffered all nations to walk in their own ways;
Acts 17:23-30
For going through, and seeing your devotions, I also found an altar on which it was superscribed, To THE UNKNOWN GOD. Therefore I now preach unto you Him whom you are ignorantly worshiping.