Swearing
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Ephesians 4:29
Let no unwholesome talk come out of your mouths, but only what is helpful for building up the one in need and bringing grace to those who listen.
Ephesians 5:4, 5
Nor should there be obscenity, foolish talk, or crude joking, which are out of character, but rather thanksgiving. / For of this you can be sure: No immoral, impure, or greedy person (that is, an idolater), has any inheritance in the kingdom of Christ and of God.
James 5:12
Above all, my brothers, do not swear, not by heaven or earth or by any other oath. Simply let your “Yes” be yes, and your “No,” no, so that you will not fall under judgment.
Matthew 12:36
But I tell you that men will give an account on the day of judgment for every careless word they have spoken.
Luke 6:45
The good man brings good things out of the good treasure of his heart, and the evil man brings evil things out of the evil treasure of his heart. For out of the overflow of the heart, the mouth speaks.
Exodus 20:7
You shall not take the name of the LORD your God in vain, for the LORD will not leave anyone unpunished who takes His name in vain.
1 Corinthians 3:16
Do you not know that you yourselves are God’s temple, and that God’s Spirit dwells in you?
Colossians 3:8
But now you must put aside all such things as these: anger, rage, malice, slander, and filthy language from your lips.
Hosea 4:2
Cursing and lying, murder and stealing, and adultery are rampant; one act of bloodshed follows another.