Forgiveness: the Antidote to Pain, Anger

But love ye your enemies, and do good, and lend, hoping for nothing again; and your reward shall be great, and ye shall be the children of the Highest: for he is kind unto the unthankful and to the evil.
Be ye therefore merciful, 
as your Father also is merciful.
Judge not, and ye shall not be judged: condemn not, and ye shall not be condemned: forgive, and ye shall be forgiven
Luke 6:35-37
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

25 But forasmuch as he had not to pay, his lord commanded him to be sold, and his wife, and children, and all that he had, and payment to be made.
Matthew 18:25

26 Be ye angry, and sin not: let not the sun go down upon your wrath:
27 Neither give place to the devil.
31 Let all bitterness, and wrath, and anger, and clamour, and evil speaking, be put away from you, with all malice:
32 And be ye kind one to another, tenderhearted, forgiving one another, even as God for Christ's sake hath forgiven you.
Ephesians 4:26-27, 31-32