Romans 1:20, 28

Opposition to truth cannot be excused on the basis of ignorance, because from the creation of the world, the invisible qualities of God’s nature have been made visible, such as his eternal power and transcendence. He has made his wonderful attributes easily perceived, for seeing the visible makes us understand the invisible. So then, this leaves everyone without excuse.

And because they thought it was worthless to embrace the true knowledge of God, God gave them over to a worthless mind-set, to break all rules of proper conduct.