Matthew 5:9, 16, 23-24, 44-45

Blessed are the peacemakers: for they shall be called the children of God.

Let your light so shine before men, that they may see your good works, and glorify your Father which is in heaven.

Therefore if thou bring thy gift to the altar, and there rememberest that thy brother hath ought against thee; leave there thy gift before the altar, and go thy way; first be reconciled to thy brother, and then come and offer thy gift.

But I say unto you, Love your enemies, bless them that curse you, do good to them that hate you, and pray for them which despitefully use you, and persecute you; that ye may be the children of your Father which is in heaven: for he maketh his sun to rise on the evil and on the good, and sendeth rain on the just and on the unjust.