Wisdom of Ben Sira 23:13-15

New Catholic Bible

¹³ Do not use your mouth for coarse and foul language,
    since that involves sinful speech.
¹⁴ Remember your father and mother
    when you are sitting among the mighty,
or you may forget yourself in their presence
    and by such habits make a fool of yourself.
Then you will wish you had never been born
    and curse the day of your birth.
¹⁵ A man who gets into the habit of using shameful language
    will never be reformed as long as he lives.