Thou shalt eat it - in the place which the Lord shall choose - Thus God in his mercy made their duty and interest go hand in hand. And in every case God acts thus with his creatures; well, therefore, might Satan ask, Doth Job serve God for naught? No! nor does God design that any man should.
Compare Exodus 13:11 ff. The directions of the preceding legislation (see Numbers 18:15 ff) are here assumed, with the injunction added, that the animals thus set apart to God Deuteronomy 15:19 were not to be used by their owners for their earthly purposes. It is further allowed that firstborn animals which had a blemish should be regarded as exceptions, and instead of being given to God might be used as food Deuteronomy 15:21-22. The application of the firstborn of cattle is here directed as in Deuteronomy 12:6, Deuteronomy 12:17; Deuteronomy 14:23: they are to be consumed in the sacred Feasts at the sanctuary.