Be ye therefore merciful, as your Father also is merciful.
Luke 6:36 KJV

A man’s wisdom gives him patience; it is to his glory to overlook an offense.
Proverbs 19:11 NIV

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.
Matthew 18:21-22 KJV

So in everything, do to others what you would have them do to you, for this sums up the Law and the Prophets.
Matthew 7:12 NIV

Blessed are the merciful: for they shall obtain mercy.
Matthew 5:7 KJV

Judge not, and ye shall not be judged: condemn not, and ye shall not be condemned: forgive, and ye shall be forgiven:
Luke 6:37 KJV

For if you forgive men when they sin against you, your Heavenly Father will also forgive you. But if you do not forgive men their sins, your Father will not forgive your sins.
Matthew 6:14-15 NIV

Hatred stirs up dissention, but love covers over all wrongs.
Proverbs 10:12 NIV

"You have heard it said, ‘Love your neighbor and hate your enemy’ But I tell you: Love your enemies and pray for those who persecute you, that you may be sons of your father in heaven…."
Matthew 5:43-45 NIV

He that loveth not, knoweth not God; for God is love.
I John 4:8 KJV