Leviticus 19:17-18
17  "'Do not hate your brother in your heart. Rebuke your neighbor frankly so you will not share in his guilt. 18  "'Do not seek revenge or bear a grudge against one of your people, but love your neighbor as yourself. I am the LORD. 

Matthew 5:23-26
23 "Therefore, if you are offering your gift at the altar and there remember that your brother has something against you, 24 leave your gift there in front of the altar. First go and be reconciled to your brother; then come and offer your gift. 

25 "Settle matters quickly with your adversary who is taking you to court. Do it while you are still with him on the way, or he may hand you over to the judge, and the judge may hand you over to the officer, and you may be thrown into prison. 26 I tell you the truth, you will not get out until you have paid the last penny.[

Luke 6:27-36
Love for Enemies 
27 "But I tell you who hear me: Love your enemies, do good to those who hate you, 28 bless those who curse you, pray for those who mistreat you. 29 If someone strikes you on one cheek, turn to him the other also. If someone takes your cloak, do not stop him from taking your tunic. 30 Give to everyone who asks you, and if anyone takes what belongs to you, do not demand it back. 31 Do to others as you would have them do to you. 
32 "If you love those who love you, what credit is that to you? Even 'sinners' love those who love them. 33 And if you do good to those who are good to you, what credit is that to you? Even 'sinners' do that. 34 And if you lend to those from whom you expect repayment, what credit is that to you? Even 'sinners' lend to 'sinners,' expecting to be repaid in full. 35 But love your enemies, do good to them, and lend to them without expecting to get anything back. Then your reward will be great, and you will be sons of the Most High, because he is kind to the ungrateful and wicked. 36 Be merciful, just as your Father is merciful.

Ephesians 4:25-32
25 Therefore each of you must put off falsehood and speak truthfully to his neighbor, for we are all members of one body. 26 "In your anger do not sin": Do not let the sun go down while you are still angry, 27 and do not give the devil a foothold. 28 He who has been stealing must steal no longer, but must work, doing something useful with his own hands, that he may have something to share with those in need. 

29 Do not let any unwholesome talk come out of your mouths, but only what is helpful for building others up according to their needs, that it may benefit those who listen. 30 And do not grieve the Holy Spirit of God, with whom you were sealed for the day of redemption. 31 Get rid of all bitterness, rage and anger, brawling and slander, along with every form of malice. 32 Be kind and compassionate to one another, forgiving each other, just as in Christ God forgave you.