Romans 12:14
Bless them who persecute you; bless, and curse not.
Matthew 5:22
but I say unto you, That every man who is angry with his brother without cause, shall be liable to the judgment: and whosoever shall say to his brother, Raca, shall be liable to the sanhedrim: but whosever shall say, Thou fool, shall be liable to be cast into 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 tell you, That every idle word which men speak, for it shall they give an account in the day of judgment.
James 3:6
And the tongue is a fire, a world of iniquity: in such manner is the tongue placed among our members, that it defileth all the body, and setteth on fire the circle of nature; and is set on fire of hell.
James 3:9-10
With it we bless God even the Farther; and with the same we curse men, though after the likeness of God.
1 Peter 2:22-23
who did no sin, neither was guile found in his mouth:
1 Peter 3:9
not returning evil for evil, or railing for railing; but, contrariwise, wishing men every blessing; knowing that hereunto ye have been called, that ye should inherit the [divine] benediction.