Because that which may be known of God is manifest in them; for God has showed it unto them.
All Commentaries on Romans 1:19 Go To Romans 1
George Leo Haydock
AD 1849
That which is known of God. Or may be easily known of God, is manifest in them. The light of reason demonstrates to them the existence of one God, the maker and preserver of all things. This is made known to them from the creation of the world, or from the creatures in the world: the Creator may be discovered by the creatures, and as St. Chrysostom here says, every Scythian, every barbarian, may come to the knowledge of God by the wonderful harmony of all things, which proclaims the existence of God louder than any trumpet: but having known him, they did not glorify him; they acted contrary to their knowledge, abandoning themselves to idolatry, and the vain worship of many gods, and to all manner of vices and abominations against the light of reason. (Witham)