Sir 23:9
King James Version
“Accustom not thy mouth to swearing; neither use thyself to the naming of the Holy One.”
Context
6Let not the greediness of the belly nor lust of the flesh take hold of me; and give not over me thy servant into an impudent mind.
7Hear, O ye children, the discipline of the mouth: he that keepeth it shall never be taken in his lips.
8The sinner shall be left in his foolishness: both the evil speaker and the proud shall fall thereby.
9Accustom not thy mouth to swearing; neither use thyself to the naming of the Holy One.
10For as a servant that is continually beaten shall not be without a blue mark: so he that sweareth and nameth God continually shall not be faultless.
11A man that useth much swearing shall be filled with iniquity, and the plague shall never depart from his house: if he shall offend, his sin shall be upon him: and if he acknowledge not his sin, he maketh a double offence: and if he swear in vain, he shall not be innocent, but his house shall be full of calamities.
12There is a word that is clothed about with death: God grant that it be not found in the heritage of Jacob; for all such things shall be far from the godly, and they shall not wallow in their sins.