Ben Sira 30:10

10 Do not laugh with him, or you will have sorrow with him, and in the end you will gnash your teeth.

Ben Sira 30:10 In-Context

8 An unbroken horse turns out stubborn, and an unchecked son turns out headstrong.
9 Pamper a child, and he will terrorize you; play with him, and he will grieve you.
10 Do not laugh with him, or you will have sorrow with him, and in the end you will gnash your teeth.
11 Give him no freedom in his youth, and do not ignore his errors.
12 Bow down his neck in his youth, and beat his sides while he is young, or else he will become stubborn and disobey you, and you will have sorrow of soul from him.
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.