Psalm 51 is a Psalm by King David of Israel, written in confession and repentance after Nathan the prophet came to him, after he had seduced Bathsheba. He asked God: Wash me. Cleanse me.
Psalm 51 type repentance and salvation
The only humans entering heaven’s gate will be those sinners who confessed their sinfulness – and yielded their will completely (100%) to Christ in that moment of salvation.