Proverbs 29:21 in the King James Version
He that delicately bringeth up his servant from a child shall have him become his son at the length.
Context
20 Do you see a man who is hasty in his words? There is more hope for a fool than for him.
21 He who pampers his servant from youth will have him become a son in the end.
22 An angry man stirs up strife, and a wrathful man abounds in sin.