Deuteronomy - 21:17 Meaning

“But he shall acknowledge the son of the hated for the firstborn, by giving him a double portion of all that he hath: for he is the beginning of his strength; the right of the firstborn is his.”

King James Version (KJV)

Matthew Henry's Concise Commentary

21:15-17 This law restrains men from disinheriting their eldest sons without just cause. The principle in this case as to children, is still binding to parents; they must give children their right without partiality.