Job 31:30
Yea, I have not suffered my mouth to sin, To ask with an oath his life.
Romans 12:14
Bless those persecuting you; bless, and curse not;
Exodus 23:4-5
'When thou meetest thine enemy's ox or his ass going astray, thou dost certainly turn it back to him;
Ecclesiastes 5:2
Cause not thy mouth to hasten, and let not thy heart hasten to bring out a word before God, for God is in the heavens, and thou on the earth, therefore let thy words be few.
Ecclesiastes 5:6
Suffer not thy mouth to cause thy flesh to sin, nor say before the messenger, that 'it is an error,' why is God wroth because of thy voice, and hath destroyed the work of thy hands?
Matthew 5:22
but I -- I say to you, that every one who is angry at his brother without cause, shall be in danger of the judgment, and whoever may say to his brother, Empty fellow! shall be in danger of the sanhedrim, and whoever may say, Rebel! shall be in danger of the gehenna of the fire.
Matthew 5:43-44
'Ye heard that it was said: Thou shalt love thy neighbour, and shalt hate thine enemy;
Matthew 12:36
'And I say to you, that every idle word that men may speak, they shall give for it a reckoning in a day of judgment;
James 3:6
and the tongue is a fire, the world of the unrighteousness, so the tongue is set in our members, which is spotting our whole body, and is setting on fire the course of nature, and is set on fire by the gehenna.
James 3:9-10
with it we do bless the God and Father, and with it we do curse the men made according to the similitude of God;
1 Peter 2:22-23
who did not commit sin, nor was guile found in his mouth,
1 Peter 3:9
not giving back evil for evil, or railing for railing, and on the contrary, blessing, having known that to this ye were called, that a blessing ye may inherit;