1 John 1:8-10

But if we say that we have no sin, we deceive ourselves, and the truth is not in us.

Matthew 3:6-10

and were being baptized by him in the river Jordan, confessing their sins.

Matthew 23:25-28

Woe unto you, scribes and Pharisees, hypocrites! because you purify the exterior of the cup and the plate, and within they are full of extortion and impurity.

Matthew 27:4-5

saying, I sinned betraying the innocent blood. And they said, What is that to us? See thou to it.

Luke 15:18-24

Having risen I will go to my father, and say to him, Father, I have sinned against heaven, and in thy sight:

Acts 26:20

but first to those in Damascus, and also in Jerusalem, and throughout all the country of Judea, and to the Gentiles, I was preaching that they should repent and turn to God, doing things worthy of repentance.

Treasury of Scripture Knowledge

Summary

He that covereth his sins shall not prosper: but whoso confesseth and forsaketh them shall have mercy.

Bible References

That

Matthew 23:25
Woe unto you, scribes and Pharisees, hypocrites! because you purify the exterior of the cup and the plate, and within they are full of extortion and impurity.

Whoso

Luke 15:18
Having risen I will go to my father, and say to him, Father, I have sinned against heaven, and in thy sight:
1 John 1:8
But if we say that we have no sin, we deceive ourselves, and the truth is not in us.

And forsaketh

Matthew 3:6
and were being baptized by him in the river Jordan, confessing their sins.
Matthew 27:4
saying, I sinned betraying the innocent blood. And they said, What is that to us? See thou to it.
Acts 26:20
but first to those in Damascus, and also in Jerusalem, and throughout all the country of Judea, and to the Gentiles, I was preaching that they should repent and turn to God, doing things worthy of repentance.