Genesis 38:8

8 Then Judah said to Er’s brother Onan, “Go and marry Tamar, as our law requires of the brother of a man who has died. You must produce an heir for your brother.”

Genesis 38:8 Meaning and Commentary

Genesis 38:8

And Judah said unto Onan
Some time after his brother's death: go in unto thy brother's wife, and marry her;
Moses here uses a word not common for marriage, but which was peculiar to the marrying of a brother's wife according to a law given in his time: it appears to have been a custom before, and which the patriarch might be directed to by the Lord, in such a case when a brother died, and left no issue, for the sake of multiplication of seed, according to the divine promise, and which in the time of Moses passed into a law, see ( Deuteronomy 25:5 ) ; and raise up seed unto thy brother;
that might bear his name, and enjoy his inheritance. For this law or custom was partly political, to continue the paternal inheritance in the family, and partly typical, to direct to Christ the firstborn among many brethren, ( Romans 8:29 ) , who in all things was to have the preeminence, ( Colossians 1:18 ) ; and this was not taken from the Canaanites, among whom Judah now was, but from the ancient patriarchs, which they had no doubt from divine revelation, and was taught in the school of Shem, and handed down from father to son; for as to this being a law among the Egyptians in later times, and which continued to the days of Zeno Augustus ^F17, it is most likely they took it from the Jews.

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FOOTNOTES:

F17 Justinian. Cod l. 5. tit. 6. leg. 8.

Genesis 38:8 In-Context

6 In the course of time, Judah arranged for his firstborn son, Er, to marry a young woman named Tamar.

7 But Er was a wicked man in the LORD ’s sight, so the LORD took his life.

8 Then Judah said to Er’s brother Onan, “Go and marry Tamar, as our law requires of the brother of a man who has died. You must produce an heir for your brother.”

9 But Onan was not willing to have a child who would not be his own heir. So whenever he had intercourse with his brother’s wife, he spilled the semen on the ground. This prevented her from having a child who would belong to his brother.

10 But the LORD considered it evil for Onan to deny a child to his dead brother. So the LORD took Onan’s life, too.