Is Anger a Sin? Anger is one of the few sins we consistently try to baptize. While we wouldn’t dream of excusing lust, pride, or greed, we often call anger “righteous indignation,” as though rage becomes holy if we’re holding a Bible while we boil. The problem? The Bible doesn’t treat human anger as a spiritual weapon—it treats it like a house fire: sometimes necessary, always dangerous, and never to be left unattended.