Luke 15:18
I will rise and go to my father, and will say to him, Father, I have sinned against heaven and before thee,
Luke 15:21
And his son said unto him, Father, I have sinned against heaven and before thee, and am no longer worthy to be called thy son.
Luke 18:13
But the publican standing at a distance did not presume so much as to lift up his eyes to heaven, but smote upon his breast, saying, O God, be merciful to me a sinner.
Matthew 3:6
and they were baptized by him in Jordan, confessing their sins.
Matthew 6:9
After this manner therefore pray ye,
Matthew 6:14
For if ye forgive men their faults, your heavenly Father will also forgive you:
Matthew 7:11
If ye then, who are evil, know how to give good gifts to your children, how much more will your heavenly Father give good things to them that ask Him?
Luke 11:2
And He said unto them, when ye pray, say, "Our Father who art in heaven, hallowed be thy name; thy kingdom come; thy will be done as in heaven so also upon earth;
1 John 1:8-10
If we say that we have no sin, we deceive ourselves, and the truth is not in us.