Romans 1:19
for what may be known about God is plain to them, because God has shown it to them.
Romans 1:20
For since the creation of the world his invisible nature, even his eternal power and deity, has been clearly seen, being understood by the things that have been made. So they are without excuse;
John 1:9
The true light that gives light to every man was coming into the world.
Acts 14:16-17
In past generations he allowed all the nations to go their own ways;
Acts 17:23-30
For as I passed along, and observed the objects of your worship, I found also an altar with this inscription, 'TO AN UNKNOWN GOD.'What therefore you worship as unknown, this I proclaim to you.