Numbers 21:7
Therefore the people came to Moses, and said, We have sinned, for we have spoken against the LORD, and against you; pray to the LORD, that he take away the serpents from us. And Moses prayed for the people.
Torrey's Topical Textbook—AKJV

Psalm 32:5
I acknowledge my sin to you, and my iniquity have I not hid. I said, I will confess my transgressions to the LORD; and you forgave the iniquity of my sin. Selah.
Torrey's Topical Textbook—AKJV

Psalm 51:3,5
For I acknowledge my transgressions: and my sin is ever before me.
Torrey's Topical Textbook—AKJV