Learn what it means to repent, for man and also for GOD, and how it will help to do so. And learn when to forgive.

Genesis 6:7
7 And the LORD said, I will destroy man whom I have created from the face of the earth; both man, and beast, and the creeping thing, and the fowls of the air; for it repenteth me that I have made them.
8 But Noah found grace in the eyes of the LORD.

Jonah 3:9
9 Who can tell if God will turn and repent, and turn away from his fierce anger, that we perish not?
10 And God saw their works, that they turned from their evil way; and God repented of the evil, that he had said that he would do unto them; and he did it not.

Matthew 4:17
17 From that time Jesus began to preach, and to say, Repent: for the kingdom of heaven is at hand.

Luke 13:3
3 I tell you, Nay: but, except ye repent, ye shall all likewise perish.

Luke 15:7
7 I say unto you, that likewise joy shall be in heaven over one sinner that repenteth, more than over ninety and nine just persons, which need no repentance.

Luke 15:10
10 Likewise, I say unto you, there is joy in the presence of the angels of God over one sinner that repenteth.

Luke 17:3
3 Take heed to yourselves: If thy brother trespass against thee, rebuke him; and if he repent, forgive him.
4 And if he trespass against thee seven times in a day, and seven times in a day turn again to thee, saying, I repent; thou shalt forgive him.

Acts 2:38
38 Then Peter said unto them, Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Ghost.

Acts 8:22
22 Repent therefore of this thy wickedness, and pray God, if perhaps the thought of thine heart may be forgiven thee.

Revelation 2:21
21 And I gave her space to repent of her fornication; and she repented not.
22 Behold, I will cast her into a bed, and them that commit adultery with her into great tribulation, except they repent of their deeds.

Revelation 3:3
3 Remember therefore how thou hast received and heard, and hold fast, and repent. If therefore thou shalt not watch, I will come on thee as a thief, and thou shalt not know what hour I will come upon thee.

Revelation 3:19
19 As many as I love, I rebuke and chasten: be zealous therefore, and repent.