Using Foul or Filthy Language
"The wicked, through the pride of his countenance, will not seek after God: God is not in all his thoughts. His ways are always grievous; thy judgments are far above out of his sight: as for all his enemies, he puffeth at them. He hath said in his heart, I shall not be moved: for I shall never be in adversity. His mouth is full of cursing and deceit and fraud: under his tongue is mischief and vanity.
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(Psalms 10:4-7)
"For the sin of their mouth and the words of their lips let them even be taken in their pride: and for cursing and lying which they speak.
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(Psalms 59:12)
"O generation of vipers, how can ye, being evil, speak good things? for out of the abundance of the heart the mouth speaketh. A good man out of the good treasure of the heart bringeth forth good things: and an evil man out of the evil treasure bringeth forth evil things. But I say unto you, That every idle word that men shall speak, they shall give account thereof in the day of judgment. For by thy words thou shalt be justified, and by thy words thou shalt be condemned.
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(Matthew 12:34-37)
"For from within, out of the heart of men, proceed evil thoughts, adulteries, fornications, murders, Thefts, covetousness, wickedness, deceit, lasciviousness, an evil eye, blasphemy, pride, foolishness: All these evil things come from within, and defile the man."
(Mark 7:21-23)
"Their throat is an open sepulchre; with their tongues they have used deceit; the poison of asps is under their lips: Whose mouth is full of cursing and bitterness:
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(Romans 3:13-14)
"Let no corrupt communication proceed out of your mouth, but that which is good to the use of edifying, that it may minister grace unto the hearers."
(Ephesians 4:29)
"But now ye also put off all these; anger, wrath, malice, blasphemy, filthy communication out of your mouth."
(Colossians 3:8)
"If any man among you seem to be religious, and bridleth not his tongue, but deceiveth his own heart, this man's religion is vain.
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(James 1:26)