"Which one of you, having a hundred sheep and losing one of them, does not leave the ninety-nine in the wilderness and go after the one that is lost until he finds it? When he has found it, he lays it on his shoulders and rejoices. And when he comes home, he calls together his friends and neighbors, saying to them, 'Rejoice with me, for I have found my sheep that was lost.' Just so, I tell you, there will be more joy in heaven over one sinner who repents than over ninety-nine righteous persons who need no repentance." ( Luke 15:4-7)

"Everyone who commits sin is a slave to sin. The slave does not have a permanent place in the household; the Son has a place there forever. So if the Son makes you free, you will be free indeed." ( John 8:34-36)

"Or what woman having ten silver coins, if she loses one of them, does not light a lamp, sweep the house, and search carefully until she finds it? When she has found it, she calls together her friends and neighbors, saying, 'Rejoice with me, for I have found the coin that I had lost.' Just so, I tell you, there is joy in the presence of the angels of God over one sinner who repents." ( Luke 15:8-10)

"Whenever you stand praying, forgive, if you have anything against anyone; so that your Father in heaven may also forgive you your trespasses." ( Mark 11:25)

"For if you forgive others their trespasses, your heavenly Father will also forgive you; but if you do not forgive others, neither will your Father forgive your trespasses." ( Matthew 6:14-15)

"Do not judge, and you will not be judged; do not condemn, and you will not be condemned. Forgive, and you will be forgiven; give, and it will be given to you. A good measure, pressed down, shaken together, running over, will be put in to your lap; for the measure you give will be the measure you get back." ( Luke 6:37-38)

"I have come as light into the world, so that everyone who believes in me should not remain in the darkness." ( John 12:46)

Helpful links to related questions/topics

Promises To Followers Forgiveness for the Guilty What does it mean to have Jesus in my heart? Paul Describes Jesus as a Source of Forgiveness (Savior) Ask Jesus - He Says God Forgives You if You Ask Believe I Am Who I Claim to Be - Jesus Ask, Seek, Knock Forgive One Another - Jesus