4 Bible Verses about Corruption, Causes

Do not be deceived: “Bad company corrupts good morals.”

Put away from you a deceitful (lying, misleading) mouth,
And put devious lips far from you.

and perpetual friction between men who are corrupted in mind and deprived of the truth, who think that godliness is a source of profit [a lucrative, money-making business—withdraw from them].

For I know that after my death you will behave corruptly and turn from the way which I have commanded you; and evil will come upon you in the latter days, because you will do evil in the sight of the Lord, provoking Him to anger with the work of your hands.”