Ben Sira 23:16

16 Two sorts of men multiply sins, and a third incurs wrath. The soul heated like a burning fire will not be quenched until it is consumed; a man who commits fornication with his near of kin will never cease until the fire burns him up.

Ben Sira 23:16 In-Context

14 Remember your father and mother when you sit among great men; lest you be forgetful in their presence, and be deemed a fool on account of your habits; then you will wish that you had never been born, and you will curse the day of your birth
15 A man accustomed to use insulting words will never become disciplined all his days.
16 Two sorts of men multiply sins, and a third incurs wrath. The soul heated like a burning fire will not be quenched until it is consumed; a man who commits fornication with his near of kin will never cease until the fire burns him up.
17 To a fornicator all bread tastes sweet; he will never cease until he dies.
18 A man who breaks his marriage vows says to himself, "Who sees me? Darkness surrounds me, and the walls hide me, and no one sees me. Why should I fear? The Most High will not take notice of my sins."
Revised Standard Version of the Bible, copyright 1952 [2nd edition, 1971] by the Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.