Job 31:30
Neither have I suffered my mouth to sin by wishing a curse to his soul.
Romans 12:14
Bless them which persecute you: bless, and curse not.
Exodus 23:4-5
If thou meet thine enemy's ox or his ass going astray, thou shalt surely bring it back to him again.
Ecclesiastes 5:2
Be not rash with thy mouth, and let not thine heart be hasty to utter any thing before God: for God is in heaven, and thou upon earth: therefore let thy words be few.
Ecclesiastes 5:6
Suffer not thy mouth to cause thy flesh to sin; neither say thou before the angel, that it was an error: wherefore should God be angry at thy voice, and destroy the work of thine hands?
Matthew 5:22
But I say unto you, That whosoever is angry with his brother without a cause shall be in danger of the judgment: and whosoever shall say to his brother, Raca, shall be in danger of the council: but whosoever shall say, Thou fool, shall be in danger of hell fire.
Matthew 5:43-44
Ye have heard that it hath been said, Thou shalt love thy neighbour, and hate thine enemy.
Matthew 12:36
But I say unto you, That every idle word that men shall speak, they shall give account thereof in the day of judgment.
James 3:6
And the tongue is a fire, a world of iniquity: so is the tongue among our members, that it defileth the whole body, and setteth on fire the course of nature; and it is set on fire of hell.
James 3:9-10
Therewith bless we God, even the Father; and therewith curse we men, which are made after the similitude of God.
1 Peter 2:22-23
Who did no sin, neither was guile found in his mouth:
1 Peter 3:9
Not rendering evil for evil, or railing for railing: but contrariwise blessing; knowing that ye are thereunto called, that ye should inherit a blessing.