19 "You must set aside for the Lord your God all the firstborn males from your flocks and herds. Do not use the firstborn of your herds to work your fields, and do not shear the firstborn of your flocks. 20 Instead, you and your family must eat these animals in the presence of the Lord your God each year at the place he chooses. 21 But if this firstborn animal has any defect, such as lameness or blindness, or if anything else is wrong with it, you must not sacrifice it to the Lord your God. 22 Instead, use it for food for your family in your hometown. Anyone, whether ceremonially clean or unclean, may eat it, just as anyone may eat a gazelle or deer. 23 But you must not consume the blood. You must pour it out 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.