19 All the firstborn males that come from your herd and your flock you shall sanctify to the Lord your God; you shall do no work with the firstborn of your herd, nor shear the firstborn of your flock. 20 You and your household shall eat it before the Lord your God year by year in the place which the Lord chooses. 21 But if there is a defect in it, if it is lame or blind or has any serious defect, you shall not sacrifice it to the Lord your God. 22 You may eat it within your gates; the unclean and the clean person alike may eat it, as if it were a gazelle or a deer. 23 Only you shall not eat its blood; you shall pour it on the ground like water.
Matthew Henry's Commentary on Deuteronomy 15:19-23
Commentary on Deuteronomy 15:19-23
(Read Deuteronomy 15:19-23)
Here is a direction what to do with the firstlings. We are not now limited as the Israelites were; we make no difference between a first calf, or lamb, and the rest. Let us then look to the gospel meaning of this law, devoting ourselves and the first of our time and strength to God; and using all our comforts and enjoyments to his praise, and under the direction of his law, as we have them all by his gift.