Sirach 23:15-17

New Revised Standard Version Catholic Edition

¹⁵ Those who are accustomed to using abusive language
    will never become disciplined as long as they live.

¹⁶ Two kinds of individuals multiply sins,
    and a third incurs wrath.
Hot passion that blazes like a fire
    will not be quenched until it burns itself out;
one who commits fornication with his near of kin
    will never cease until the fire burns him up.
¹⁷ To a fornicator all bread is sweet;
    he will never weary until he dies.