Psalm 51:3 in the King James Version
For I acknowledge my transgressions: and my sin is ever before me.
Context
2 Wash me thoroughly from my iniquity. Cleanse me from my sin.
3 For I know my transgressions. My sin is constantly before me.
4 Against you, and you only, I have sinned, and done that which is evil in your sight, so you may be proved right when you speak, and justified when you judge.