John Trapp on Proverbs 29:21

Verſ. 21. He that delicately bringeth up his ſervant] A maſter that would be (as he ought) both loved and feared by his ſervants, muſt ſee to two things, 1 The well-chuſing; and 2 The well-uſing of them. This Salomon himſelf (that thus adviſeth here) was not ſo well adviſed of; for he ſaw that Jereboam (who gave occaſion, as it is conceived, of uttering this Proverb) was meet for the work, and therefore (not examining his religion) entertained him into his ſervice, yea placed him over the family of Joſeph, admitted him into ſo much familiarity, and ſo let looſe the bridle of domeſtical diſcipline to him, that he took ſtate upon him as a young maſter in the houſe, and ſoon after turned traitour, and would needs be as his ſonne, and more. The like is to be ſeen in Abner, Iſhboſheths ſervant, who grew ſo haughty and haunty, that he might not be ſpoken to, 2 Sam. 3. And in Zimre, whom his maſter Elah ſo favoured and eſteemed, that he made him captain over the half-part of his charets. But this begger thus ſet on horſe-back, rides without reigns to the ruin of his maſter and his whole houſe, 1 King. 16.11. So true is that of the Poet.

[non-Latin text not transcribed]. Aſperius nihil eſt humili dum ſurgit in altum

Tobiah the ſervant is ſo inſolent ther's no dealing with him.