Satan was cast out of heaven because of pride (Isaiah 14:12-15). He had the selfish audacity to attempt to replace God Himself as the rightful ruler of the universe. But Satan will be cast down to hell in the final judgment of God. For those who rise up in defiance against God, there is nothing ahead but disaster (Isaiah 14:22).
Let another praise you, and not your own mouth; a stranger, and not your own lips.
Haughty eyes and a proud heart, the lamp of the wicked, are sin.
For the sin of their mouths, the words of their lips, let them be trapped in their pride. For the cursing and lies that they utter,
Jeremiah 9:23–Thus says the Lord: “Let not the wise man boast in his wisdom, let not the mighty man boast in his might, let not the rich man boast in his riches,”