Romans 1:21

because that, knowing God, they glorified him not as God, neither gave thanks; but became vain in their reasonings, and their senseless heart was darkened. [And they were without excuse, for when they knew God they did not worship him according to the knowledge which they had, nor did they praise him for his benefits; but they erred in their mind, thus making their whole inner man senseless and dark, not having the light of truth with which they started. The phrase, "vain in their reasonings," means that their corrupt lives corrupted their minds, for, as Tholuck observes, "religious and moral error is always the consequence of religious and moral perversity." As Calvin expresses it: "They quickly choked by their own depravity the seed of right knowledge before it grew to ripeness."]