Ben Sira 30:12

12 Bow down his neck while he is young, and beat his sides while he is a child, lest he grow stubborn, and regard thee not, and so be a sorrow of heart to thee.

Ben Sira 30:12 In-Context

10 Laugh not with him, lest thou have sorrow, and at the last thy teeth be set on edge.
11 Give him not liberty in his youth, and wink not at his devices.
12 Bow down his neck while he is young, and beat his sides while he is a child, lest he grow stubborn, and regard thee not, and so be a sorrow of heart to thee.
13 Instruct thy son, and labour about him, lest his lewd behaviour be an offence to thee.
14 Better is a poor man who is sound, and strong of constitution, than a rich man who is weak and afflicted with evils.
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