Blessed are the peacemakers, for they will be called children of God.
Matthew 5:9, NRSV
Come to terms quickly with your accuser while you are on the way to court with him, or your accuser may hand you over to the judge, and the judge to the guard, and you will be thrown into prison.
Matthew 5:25, NRSV
If it is possible, so far as it depends on you, live peaceably with all. Beloved, never avenge yourselves, but leave room for the wrath of God; for it is written, “Vengeance is mine, I will repay, says the Lord.” No, “if your enemies are hungry, feed them; if they are thirsty, give them something to drink; for by doing this you will heap burning coals on their heads.” Do not be overcome by evil, but overcome evil with good.
Romans 12:18–21, NRSV
Jesus said to him, “Friend, do what you are here to do.” Then they came and laid hands on Jesus and arrested him. Suddenly, one of those with Jesus put his hand on his sword, drew it, and struck the slave of the high priest, cutting off his ear. Then Jesus said to him, “Put your sword back into its place; for all who take the sword will perish by the sword.”
Matthew 26:50–52, NRSV
But I say to you that listen, Love your enemies, do good to those who hate you, bless those who curse you, pray for those who abuse you. If anyone strikes you on the cheek, offer the other also; and from anyone who takes away your coat do not withhold even your shirt. Give to everyone who begs from you; and if anyone takes away your goods, do not ask for them again. Do to others as you would have them do to you. If you love those who love you, what credit is that to you? For even sinners love those who love them. If you do good to those who do good to you, what credit is that to you? For even sinners do the same. If you lend to those from whom you hope to receive, what credit is that to you? Even sinners lend to sinners, to receive as much again. But love your enemies, do good, and lend, expecting nothing in return. Your reward will be great, and you will be children of the Most High; for he is kind to the ungrateful and the wicked. Be merciful, just as your Father is merciful.
Luke 6:27–36, NRSV