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.
2 Timothy 2:16
But avoid irreverent babble, for it will lead people into more and more ungodliness,
Proverbs 15:1
A soft answer turns away wrath, but a harsh word stirs up anger.
Psalm 109:18
He clothed himself with cursing as his coat; may it soak into his body like water, like oil into his bones!
Leviticus 24:15
And speak to the people of Israel, saying, Whoever curses his God shall bear his sin.
Proverbs 21:23
Whoever keeps his mouth and his tongue keeps himself out of trouble.
Matthew 12:36
I tell you, on the day of judgment people will give account for every careless word they speak,
Romans 3:14
“Their mouth is full of curses and bitterness.”
Numbers 23:8
How can I curse whom God has not cursed? How can I denounce whom the Lord has not denounced?
Leviticus 19:14
You shall not curse the deaf or put a stumbling block before the blind, but you shall fear your God: I am the Lord.
Matthew 5:21-22
“You have heard that it was said to those of old, ‘You shall not murder; and whoever murders will be liable to judgment.’ 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.
Proverbs 4:24
Put away from you crooked speech, and put devious talk far from you.
Philippians 4:8
Finally, brothers, whatever is true, whatever is honorable, whatever is just, whatever is pure, whatever is lovely, whatever is commendable, if there is any excellence, if there is anything worthy of praise, think about these things.
Matthew 5:33-37
“Again you have heard that it was said to those of old, ‘You shall not swear falsely, but shall perform to the Lord what you have sworn.’ But I say to you, Do not take an oath at all, either by heaven, for it is the throne of God, or by the earth, for it is his footstool, or by Jerusalem, for it is the city of the great King. And do not take an oath by your head, for you cannot make one hair white or black. Let what you say be simply ‘Yes’ or ‘No’; anything more than this comes from evil.
Psalm 19:14
Let the words of my mouth and the meditation of my heart be acceptable in your sight, O Lord, my rock and my redeemer.
James 3:9-12
With it we bless our Lord and Father, and with it we curse people who are made in the likeness of God. From the same mouth come blessing and cursing. My brothers, these things ought not to be so. Does a spring pour forth from the same opening both fresh and salt water? Can a fig tree, my brothers, bear olives, or a grapevine produce figs? Neither can a salt pond yield fresh water.
Proverbs 15:4
A gentle tongue is a tree of life, but perverseness in it breaks the spirit.