Romans 1:19
"Because that which may be known of God is manifest in them; for God hath shewed it unto them."
Cross References (ranked by relevance)
Romans 1:20
15
For the invisible things of him from the creation of the world are clearly seen, being understood by the things that are made, even his eternal power and Godhead; so that they are without excuse:
Isaiah 40:26
Lift up your eyes on high, and behold who hath created these things, that bringeth out their host by number: he calleth them all by names by the greatness of his might, for that he is strong in power; not one faileth.
John 1:9
That was the true Light, which lighteth every man that cometh into the world.