Colossians 3:13

forbearing one another, and freely forgiving one another, if any man hath a complaint against another: even as Christ hath freely forgiven you, so also do ye.

Ephesians 4:32

but be ye kind one to another, full of sensibility, forgiving mutually, even as God in Christ hath forgiven you.

Mark 11:25

And when ye stand praying, forgive, if ye have a matter against any man: that your Father also who is in heaven may forgive you your trespasses.

Ephesians 4:2

with all humility and meekness, with long suffering, forbearing one another in love;

James 2:13

For judgment without mercy shall be on him who shewed no mercy, and mercy glorieth against judgment.

Matthew 5:44

But I say unto you, Love your enemies, bless those who curse you, do good to those who hate you, and pray for those who treat you insolently, and persecute you;

Matthew 6:12

And forgive us our debts, as we forgive our debtors.

Matthew 6:14-15

For if ye forgive men their offences, your heavenly Father will also forgive you:

Matthew 18:15-17

Now if thy brother sin against thee, go and reprove him between thyself and him alone; if he hear thee, thou hast gained thy brother.

Matthew 18:21-35

Then Peter coming to him, said, Lord, how often shall my brother sin against me, and I forgive him? till seven times?

Luke 5:20-24

And seeing their faith, he saith to him, Man, thy sins are forgiven thee.

Luke 6:35-37

But love your enemies, and do good and lend, hoping for nothing in return: and your reward shall be great, and ye shall be the children of the Most High; for he is kind unto the unthankful and to the wicked.

Luke 7:48-50

And he said to her, Thy sins are forgiven.

Luke 11:4

and forgive us our sins, for we also forgive every one who is indebted to us. And bring us not into temptation; but deliver us from the wicked one.

Luke 17:3-4

Take heed to yourselves: if thy brother sin against thee, reprove him; and if he repent, forgive him.

Luke 23:34

And Jesus said, Father, forgive them; for they know not what they do. Then dividing his garments, they cast the lot.

Romans 15:1-2

WE then that are strong, ought to bear the infirmities of those who are feeble, and not to gratify ourselves.

Romans 15:7

Therefore help one another, as Christ also hath helped us, for the glory of God.

1 Corinthians 6:7-8

Now verily therefore there is altogether a fault among you, because ye have law-suits one with another. Why do ye not rather submit to the wrong? Why do ye not rather suffer yourselves to be defrauded?

2 Corinthians 2:10

But to whomsoever ye forgive any thing, so do I; and if I forgive any thing, to whom I forgive, for your sakes I do it, in the person of Jesus Christ,

2 Corinthians 6:6

in purity, in knowledge, in long-suffering, by kindness, by the Holy Ghost, by love unfeigned,

Galatians 6:2

Bear ye one another's burdens, and so fulfil the law of Christ.

Ephesians 5:2

and walk in love as Christ also hath loved us, and given himself for us, an oblation and sacrifice to God, for an odour of a sweet smell.

Colossians 3:12

Put on therefore, as the elect of God, holy and beloved, bowels of mercies, kindness, humility, meekness, long-suffering;

1 Peter 2:21

For hereunto have ye been called, because Christ also hath suffered for you, leaving you a pattern, that ye should follow his steps;

Treasury of Scripture Knowledge

Summary

Forbearing one another, and forgiving one another, if any man have a quarrel against any: even as Christ forgave you, so also do ye.

Bible References

Forbearing

Romans 15:1
WE then that are strong, ought to bear the infirmities of those who are feeble, and not to gratify ourselves.
2 Corinthians 6:6
in purity, in knowledge, in long-suffering, by kindness, by the Holy Ghost, by love unfeigned,
Galatians 6:2
Bear ye one another's burdens, and so fulfil the law of Christ.
Ephesians 4:2
with all humility and meekness, with long suffering, forbearing one another in love;

Quarrel

Matthew 18:15
Now if thy brother sin against thee, go and reprove him between thyself and him alone; if he hear thee, thou hast gained thy brother.
1 Corinthians 6:7
Now verily therefore there is altogether a fault among you, because ye have law-suits one with another. Why do ye not rather submit to the wrong? Why do ye not rather suffer yourselves to be defrauded?

General references

Matthew 6:14
For if ye forgive men their offences, your heavenly Father will also forgive you:
Ephesians 4:3
careful to preserve unity of spirit, in the bond of peace.
1 John 4:11
Beloved, if God so loved us, we ought also to love one another.