Pride took him from the highest place to outside.
Get out, you are expelled
Ibn Kathir says Allah gave an unconditional command to Iblis to leave the position he held among the highest of heights. He was declared an outcast. The thing he refused to bow to protect, his rank, was exactly what he lost.
The manager who would not admit the mistake, to save face, and lost the team's respect anyway. The parent who would not apologize, and lost the child's trust. Pride guards a position and then costs you that position.
Admitting I am wrong will make me smaller.
Pride promises to protect my standing and is usually what takes it away.
Say sorry today for one small thing you would normally let slide.