Deuteronomy 21:17

Authorized King James Version

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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.

Original Language Analysis

כִּי֩ H3588
כִּי֩
Strong's: H3588
Word #: 1 of 21
(by implication) very widely used as a relative conjunction or adverb (as below); often largely modified by other particles annexed
אֶת H853
אֶת
Strong's: H853
Word #: 2 of 21
properly, self (but generally used to point out more definitely the object of a verb or preposition, even or namely)
הַבְּכֹ֨ר for the firstborn H1060
הַבְּכֹ֨ר for the firstborn
Strong's: H1060
Word #: 3 of 21
first-born; hence, chief
בֶּן the son H1121
בֶּן the son
Strong's: H1121
Word #: 4 of 21
a son (as a builder of the family name), in the widest sense (of literal and figurative relationship, including grandson, subject, nation, quality or
הַשְּׂנוּאָ֜ה of the hated H8130
הַשְּׂנוּאָ֜ה of the hated
Strong's: H8130
Word #: 5 of 21
to hate (personally)
יַכִּ֗יר But he shall acknowledge H5234
יַכִּ֗יר But he shall acknowledge
Strong's: H5234
Word #: 6 of 21
properly, to scrutinize, i.e., look intently at; hence (with recognition implied), to acknowledge, be acquainted with, care for, respect, revere, or (
לָ֤תֶת by giving H5414
לָ֤תֶת by giving
Strong's: H5414
Word #: 7 of 21
to give, used with greatest latitude of application (put, make, etc.)
לוֹ֙ H0
לוֹ֙
Strong's: H0
Word #: 8 of 21
פִּ֣י portion H6310
פִּ֣י portion
Strong's: H6310
Word #: 9 of 21
the mouth (as the means of blowing), whether literal or figurative (particularly speech); specifically edge, portion or side; adverbially (with prepos
שְׁנַ֔יִם him a double H8147
שְׁנַ֔יִם him a double
Strong's: H8147
Word #: 10 of 21
two; also (as ordinal) twofold
בְּכֹ֥ל H3605
בְּכֹ֥ל
Strong's: H3605
Word #: 11 of 21
properly, the whole; hence, all, any or every (in the singular only, but often in a plural sense)
אֲשֶׁר H834
אֲשֶׁר
Strong's: H834
Word #: 12 of 21
who, which, what, that; also (as an adverb and a conjunction) when, where, how, because, in order that, etc
יִמָּצֵ֖א of all that he hath H4672
יִמָּצֵ֖א of all that he hath
Strong's: H4672
Word #: 13 of 21
properly, to come forth to, i.e., appear or exist; transitively, to attain, i.e., find or acquire; figuratively, to occur, meet or be present
ל֑וֹ H0
ל֑וֹ
Strong's: H0
Word #: 14 of 21
כִּי H3588
כִּי
Strong's: H3588
Word #: 15 of 21
(by implication) very widely used as a relative conjunction or adverb (as below); often largely modified by other particles annexed
הוּא֙ H1931
הוּא֙
Strong's: H1931
Word #: 16 of 21
he (she or it); only expressed when emphatic or without a verb; also (intensively) self, or (especially with the article) the same; sometimes (as demo
רֵאשִׁ֣ית for he is the beginning H7225
רֵאשִׁ֣ית for he is the beginning
Strong's: H7225
Word #: 17 of 21
the first, in place, time, order or rank (specifically, a firstfruit)
אֹנ֔וֹ of his strength H202
אֹנ֔וֹ of his strength
Strong's: H202
Word #: 18 of 21
ability, power, (figuratively) wealth
ל֖וֹ H0
ל֖וֹ
Strong's: H0
Word #: 19 of 21
מִשְׁפַּ֥ט the right H4941
מִשְׁפַּ֥ט the right
Strong's: H4941
Word #: 20 of 21
properly, a verdict (favorable or unfavorable) pronounced judicially, especially a sentence or formal decree (human or (participant's) divine law, ind
הַבְּכֹרָֽה׃ of the firstborn H1062
הַבְּכֹרָֽה׃ of the firstborn
Strong's: H1062
Word #: 21 of 21
the firstling of man or beast; abstractly primogeniture

Analysis & Commentary

But he shall acknowledge the son of the hated for the firstborn, by giving him a double portion of all that he hath—The Hebrew bekhor (firstborn) carries legal and theological weight throughout Scripture. The pi shenayim ("double portion," literally "mouth of two") means the firstborn receives twice what other sons receive, not two-thirds of the estate. If there are three sons, the estate is divided into four parts: the firstborn gets two, the others one each.

For he is the beginning of his strengthReshit ono ("beginning of his strength") refers to the father's first exercise of procreative power, establishing the firstborn's unique status. The right of the firstborn is his (mishpat ha-bekorah)—this is a legal entitlement, not parental preference. The law prohibits favoritism based on affection for one wife over another, addressing the exact situation in Jacob's household where he favored Rachel over Leah yet had to acknowledge Reuben's legal status (Genesis 49:3).

This law protects inheritance rights from paternal caprice and foreshadows Christ as the eternal Firstborn who receives the full inheritance (Colossians 1:15-18; Hebrews 1:2). The double portion also prefigured Elisha's request for a double portion of Elijah's spirit (2 Kings 2:9).

Historical Context

In ancient Near Eastern patriarchal society (circa 1406 BCE), inheritance customs varied, but the firstborn generally received preferential treatment. This Mosaic law standardizes the practice for Israel, establishing clear legal protections against favoritism. Polygamy created complex household dynamics where a man might love one wife more than another—as with Jacob, Elkanah (1 Samuel 1:5), and others. Without this law, fathers could disinherit legitimate heirs based on maternal preference, creating injustice and family discord. The law reflects God's concern for impartial justice and protection of the vulnerable, even within family structures.

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