'Iniquity' in the Bible

The Son of Man will send out His angels, and they will gather out of His kingdom all things that offend [those things by which people are led into sin], and all who practice evil [leading others into sin],

So you, also, outwardly seem to be just and upright to men, but inwardly you are full of hypocrisy and lawlessness.

Because lawlessness is increased, the love of most people will grow cold.