Ben Sira 22:20

20 One who throws a stone at birds scares them away, and one who reviles a friend destroys a friendship.

Ben Sira 22:20 In-Context

18 Fences set on a high place will not stand firm against the wind; so a timid mind with a fool's resolve will not stand firm against any fear.
19 One who pricks the eye brings tears, and one who pricks the heart makes clear its feelings.
20 One who throws a stone at birds scares them away, and one who reviles a friend destroys a friendship.
21 Even if you draw your sword against a friend, do not despair, for there is a way back.
22 If you open your mouth against your friend, do not worry, for reconciliation is possible. But as for reviling, arrogance, disclosure of secrets, or a treacherous blow— in these cases any friend will take to flight.
New Revised Standard Version Bible, copyright 1989, 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.