John Calvin on Colossians 4:1

1. Masters, what is just. He mentions first, what is just, by which term he expresses that kindness, as to which he has given injunction in the Epistle to the Ephesians. (Ephesians 6:8.) But as masters, looking down as it were from aloft, despise the condition of servants, so that they think that they are bound by no law, Paul brings them under control, “Et rabbaisse leur presomption;” — “And beats down their presumption.” because both are equally under subjection to the authority of God. Hence that equity of which he makes mention.

And mutual equity. Some understand it otherwise, but I have no doubt that Paul here employed ἰσότητα to mean analogical Our author, has here in view a definition of Aristotle, quoted by him when commenting on 2 Corinthians 8:13. See Calvin on the Corinthians, vol. 2, p. 294. — Ed. or distributive right, “C’est a dire, qui est reglé et compassé selon la circonstance, qualité, ou vocation des personnes;” — “That is to say, which is regulated and proportioned according to the circumstances, station, or calling of individuals.” as in Ephesians, τὰ αὐτὰ, (the same things.) “Comme aux Ephesiens il a vsé de ce mot, Le mesme, ou Le semblable, en ceste signification, comme il a este là touché;” — “As in the Ephesians he has made use of this word, the same, or the like, in this sense, as he has there noticed.” For masters have not their servants bound to them in such a manner as not to owe something to them in their turn, as analogical right to be in force among all ranks. “Comme il y a vn droict mutuel, reglé selon la consideration de l’office et vocation d’vn chacun, lequel droict doit auoir lieu entre tous estats;” — “As there is a mutual right, regulated according to a consideration of the office and calling of each individual, which right ought to have a place among all ranks.”