Job 31:30
(I have not let my mouth sin by asking for his life with a curse),
Romans 12:14
Bless those who persecute you; bless and do not curse them.
Exodus 23:4-5
"If you meet your enemy's ox or his donkey going astray, you shall bring it back to him
Ecclesiastes 5:2
Be not rash with your mouth, nor let your heart be hasty to utter a word before God, for God is in heaven and you are on earth. Therefore let your words be few.
Ecclesiastes 5:6
Let not your mouth lead you into sin, and do not say before the messenger that it was a mistake. Why should God be angry at your voice and destroy the work of your hands?
Matthew 5:22
But I say to you that everyone who is angry with his brother will be liable to judgment; whoever insults his brother will be liable to the council; and whoever says, 'You fool!' will be liable to the hell of fire.
Matthew 5:43-44
"You have heard that it was said, 'You shall love your neighbor and hate your enemy.'
Matthew 12:36
I tell you, on the day of judgment people will give account for every careless word they speak,
James 3:6
And the tongue is a fire, a world of unrighteousness. The tongue is set among our members, staining the whole body, setting on fire the entire course of life, and set on fire by hell.
James 3:9-10
With it we bless our Lord and Father, and with it we curse people who are made in the likeness of God.
1 Peter 2:22-23
He committed no sin, neither was deceit found in his mouth.
1 Peter 3:9
Do not repay evil for evil or reviling for reviling, but on the contrary, bless, for to this you were called, that you may obtain a blessing.