Ex 21, to guard against such an application of the law as might be really cruelty under the circumstances rather than love. Manumission was only an act of love, when the person to be set free had some hope of success and of getting a living for himself; and where there was no such prospect, compelling him to accept of freedom might be equivalent to thrusting him away.
Verse 18
If, on the other hand, the servant (or maid) wished to be set free, the master was not to think it hard; “for the double of the wages of a day-labourer he has earned for thee for six years,” i.e., not “twice the time of a day-labourer, so that he had really deserved twice the wages” (Vatablius, Ad. Osiander, J. Gerhard), for it cannot be proved from Isa 16:14, that a day-labourer generally hired himself out for three years; nor yet, “he has been obliged to work much harder than a day-labourer, very often by night as well as day” (Clericus, J. H. Michaelis, Rosenmüller, Baumgarten); but simply, “he has earned and produced so much, that if you had been obliged to keep a day-labourer in his place, it would have cost you twice as much” (Schultz, Knobel).
verses 19-23
Application of the first-born of Cattle. - From the laws respecting the poor and slaves, to which the instructions concerning the tithes (Deu 14:22-29) had given occasion, Moses returns to appropriation of the first-born of the herd and flock to sacrificial meals, which he had already touched upon in Deu 12:6, Deu 12:17, and Deu 14:23, and concludes by an explanation upon this point. The command, which the Lord had given when first they came out of Egypt (Exo 13:2, Exo 13:12), that all the first-born of the herd and flock should be sanctified to Him, is repeated here by Moses, with the express injunction that they were not to work with the first-born of cattle (by yoking them to the plough or waggon), and not to shear the first-born of sheep; that is to say, they were not to use the first-born animals which were sanctified to the Lord for their own earthly purposes, but to offer them year by year as sacrifices to the Lord, and consume them in sacrificial meals. To this he adds (Deu 15:21, Deu 15:22) that further provision, that first-born animals, which were blind or lame, or had any other bad fault, were not to be offered in sacrifice to the Lord, but, like ordinary animals used for food, could be eaten in all the towns of the land. Although the first part of this law was involved in the general laws as to the kind of animal that could be offered in sacrifice (Lev 22:19.), it was by no means unimportant
