Answer
Ephesians 4:29
Let no corrupting talk come out of your mouths, but only such as is good for building up, as fits the occasion, that it may give grace to those who hear.
Ephesians 5:4
Let there be no filthiness nor foolish talk nor crude joking, which are out of place, but instead let there be thanksgiving.
James 1:26
If anyone thinks he is religious and does not bridle his tongue but deceives his heart, this person's religion is worthless.
James 3:8-10
But no human being can tame the tongue. It is a restless evil, full of deadly poison. 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.
Colossians 3:8
But now you must put them all away: anger, wrath, malice, slander, and obscene talk from your mouth.
Luke 6:28
Bless those who curse you, pray for those who abuse you.
Colossians 4:6
Let your speech always be gracious, seasoned with salt, so that you may know how you ought to answer each person.
Romans 12:14
Bless those who persecute you; bless and do not curse them.
Exodus 20:7
You shall not take the name of the Lord your God in vain, for the Lord will not hold him guiltless who takes his name in vain.
Matthew 15:18-20
But what comes out of the mouth proceeds from the heart, and this defiles a person. For out of the heart come evil thoughts, murder, adultery, sexual immorality, theft, false witness, slander. These are what defile a person. But to eat with unwashed hands does not defile anyone.
Matthew 15:11
It is not what goes into the mouth that defiles a person, but what comes out of the mouth; this defiles a person.
Psalm 109:17
He loved to curse; let curses come upon him! He did not delight in blessing; may it be far from him!
Proverbs 18:21
Death and life are in the power of the tongue, and those who love it will eat its fruits.
Matthew 15:10-11
And he called the people to him and said to them, “Hear and understand: it is not what goes into the mouth that defiles a person, but what comes out of the mouth; this defiles a person.”
1 Peter 3:10
For “Whoever desires to love life and see good days, let him keep his tongue from evil and his lips from speaking deceit;
James 3:10
From the same mouth come blessing and cursing. My brothers, these things ought not to be so.
Leviticus 20:9
For anyone who curses his father or his mother shall surely be put to death; he has cursed his father or his mother; his blood is upon him.
Luke 6:45
The good person out of the good treasure of his heart produces good, and the evil person out of his evil treasure produces evil, for out of the abundance of the heart his mouth speaks.
2 Kings 2:23-24
He went up from there to Bethel, and while he was going up on the way, some small boys came out of the city and jeered at him, saying, “Go up, you baldhead! Go up, you baldhead!” And he turned around, and when he saw them, he cursed them in the name of the Lord. And two she-bears came out of the woods and tore forty-two of the boys.
James 5:12
But above all, my brothers, do not swear, either by heaven or by earth or by any other oath, but let your “yes” be yes and your “no” be no, so that you may not fall under condemnation.
Unless otherwise noted, all Bible verses are from The Holy Bible, English Standard Version® Copyright© 2001 by Crossway Bibles, a publishing ministry of Good News Publishers.
Special thanks to OpenBible.info for the data on the most well-known Bible verses.
