John Gill, on 1Pet 2:17

Servants, be subject to your masters,.... This was another notion of the Jews, that because they were the seed of Abraham, they ought not to be the servants of any; and particularly such as were believers in Christ thought they ought not to serve unbelieving masters, nor indeed believing ones, because they were equally brethren in Christ with them; hence the Apostle Peter, here, as the Apostle Paul frequently elsewhere, inculcates this duty of servants to their masters; see Co1 7:20 Ti2 2:9 the manner in which they are to be subject to them is, with all fear; with reverence to their persons, strict regard to their commands, faithfulness in any trust reposed in them, diligence in the discharge of their duty, and carefulness of offending them: and all this, not only to the good and gentle; those that are good natured, kind, beneficent, and merciful; that do not use them with rigour and severity; are moderate in their demands of service; require no more to be done than what is reasonable; allow them sufficient diet, give them good wages, and pay them duly: but also to the froward; the ill natured, morose, and rigorous; who exact more labour than is requisite; give hard words, and harder blows; withhold sufficiency of food from them, and keep back the hire of their labours.