Sirach 30:7-9

Revised Standard Version

⁷ He who spoils his son will bind up his wounds,
    and his feelings will be troubled at every cry.
⁸ A horse that is untamed turns out to be stubborn,
    and a son unrestrained turns out to be wilful.
⁹ Pamper a child, and he will frighten you;
    play with him, and he will give you grief.