Matthew 5:21-22 You have heard that it was said to the people long ago, ‘You shall not murder, and anyone who murders will be subject to judgment.’ But I tell you that anyone who is angry with a brother or sister, will be subject to judgment.

Ephesians 4:26 “In your anger do not sin”: Do not let the sun go down while you are angry,

Matthew 5:22 Again, anyone whose who says to a brother or sister, ‘Raca*,’ is answerable to the court. And anyone who says, ‘You fool!’ will be in danger of the fire of hell.

* ’Raca’ is an Aramaic term of contempt.

Romans 12:14 Bless those who persecute you; bless and do not curse.

Romans 12:19 Do not take revenge, my dear friends,

”Because we live in a broken world, much injustice will go unpunished until the final day of judgment. However, most of the time, God’s justice works itself out within the fabric of history. Evil carries within it the seeds of its own destruction…
-Tim Keller, “The Songs of Jesus”

”Not only is it a bore-leading to dissatisfaction and emptiness-but it recoils on itself. You fall into the pit you have dug for others. Haters are hated, deceivers are deceived, gossips are gossiped about. Remember this until you are not intimidated, discouraged, or tempted by the wrongdoing you see around you.”
-Tim Keller, “The Songs of Jesus”