Self-righteousness is the sin of Pride, writ large.
It sits in judgment and finds all others lacking without even permitting a defense. Truth and reason are rejected in favor of justification. It holds anger and hate as virtues, and rejects humility and compassion.
It is the closed heart presuming to know the Will of God.
Do right and being right will follow.
“Grampy Says . . .” may be freely shared and copied provided that attribution is not removed or obfuscated.