Here is a list of Bible verses on: subject.
Let all bitterness, and wrath, and anger, and clamour, and evil speaking, be put away from you, with all malice:
And be ye kind one to another, tenderhearted, forgiving one another, even as God for Christ’s sake hath forgiven you.
Forbearing one another, and forgiving one another, if any man have a quarrel against any: even as Christ forgave you, so also do ye.
Say not, I will do so to him as he hath done to me: I will render to the man according to his work.
For if ye forgive men their trespasses, your heavenly Father will also forgive you:
But if ye forgive not men their trespasses, neither will your Father forgive your trespasses.
Then said Jesus, Father, forgive them; for they know not what they do. And they parted his raiment, and cast lots.
If we confess our sins, he is faithful and just to forgive us our sins, and to cleanse us from all unrighteousness.
Judge not, and ye shall not be judged: condemn not, and ye shall not be condemned: forgive, and ye shall be forgiven:
Then came Peter to him, and said, Lord, how oft shall my brother sin against me, and I forgive him? till seven times?
Jesus saith unto him, I say not unto thee, Until seven times: but, Until seventy times seven.
For thou, Lord, art good, and ready to forgive; and plenteous in mercy unto all them that call upon thee.
And when ye stand praying, forgive, if ye have ought against any: that your Father also which is in heaven may forgive you your trespasses.
Blessed is he whose transgression is forgiven, whose sin is covered.
But if ye forgive not men their trespasses, neither will your Father forgive your trespasses.
For I will be merciful to their unrighteousness, and their sins and their iniquities will I remember no more.
He that covereth a transgression seeketh love; but he that repeateth a matter separateth very friends.
As far as the east is from the west, so far hath he removed our transgressions from us.
If thou, LORD, shouldest mark iniquities, O Lord, who shall stand?
But there is forgiveness with thee, that thou mayest be feared.