John Calvin on Deuteronomy 25:4

4. Thou shalt not muzzle the ox. This passage, indeed, properly belongs to the Supplements of the Commandment, but, since it is a confirmation of the foregoing decree, it seemed fit to connect them; especially because its faithful expositor, Paul, declares, that God had no other design in delivering it than that the laborer should not be defrauded of his just hire, (1 Corinthians 9:10;) for, when he is speaking of the maintenance to be afforded to the ministers of the Gospel, he adduces it. in proof of his case. And, lest any should object that there is a difference between oxen and men, he adds, that God does not care for oxen, but that it was said for the sake of those that labor. Meanwhile, we must bear in mind, that men are so instructed in equity, that they are bound to exercise it even towards the brute animals; for well does Solomon magnify the injustice, whereby our neighbor is injured, by the comparison; “A righteous man regardeth the life of his beast.” (Proverbs 12:10.) The sum is, that we should freely and voluntarily pay what is right, and that every one should be strict with himself as to the performance of his duty; for, if we are bound to supply subsistence to brute animals, much less must we wait for men to be importunate with us, in order that they may obtain their due.

Exodus 22

Exodus 22:21-24

21. Thou shalt neither vex a stranger, nor oppress him: for ye were strangers in the land of Egypt.

21. Peregrinum non opprimes, neque spoliabis: quia peregrini fuistis in terra AEgypti.

22. Ye shalt not afflict any widow, or fatherless child.

22. Nullam viduam nec pupillum affligetis.

23. If thou afflict them in any wise, and the, and cry at all unto me, I will surely hear their cry:

23. Si affligendo afflixeritis eum, certe si clamando clamaverit ad me, audiendo audiam clamorem ejus:

24. And my wrath shall wax hot, and I will kill you with the sword; and your wives shall be widows, and your children fatherless.

24. Irasceturque furor meus, et occidam vos gladio, eruntque uxores vestrae viduae, et filii vestri pupilli.

Leviticus 19

Leviticus 19:33, 34

33. And if a stranger sojourn with thee in your land, ye shall not vex him.

33. Si peregrinatus tecum fuerit peregrinus in terra vestra, non opprimetis illum.

34. But the stranger that dwelleth with you shall be unto you as one horn among you, and thou shalt love him as thyself; for ye were strangers in the land of Egypt: I am the Lord your God.

34. Tanquam indigena ex vobis, erit vobis peregrinus qui peregrinatur apud vos, et diliges eum sicut teipsum: quia peregrini fuistis in terra: ego Jehova Deus vester.