What is self-righteousness, and how does it differ from the righteousness God gives?

An infinite variety of mixes and manifestations can come from these four. For example, an ascetic with a weakness for mental sins is likely to judge the lawless person who falls into overt sins. The lawless man may see the ascetic’s self-righteousness and may himself fall into mental sins by despising what he sees as a hypocrite. A person who lusts for power and has a weakness for sins of the tongue may try to lift himself up by tearing others down through criticism and maligning. Another person with the same lust but with a weakness for mental attitude sins may never say a bitter word and so may seem to be a better person. But to God—who alone sees the hearts of men—both are equally guilty.