Буття 38:12

But when Thamar, after waiting a long time, saw that Shelah had grown up and yet was not given to her as a husband, she determined to procure children from Judah himself, who had become a widower in the meantime; and his going to Timnath to the sheep-shearing afforded her a good opportunity. The time mentioned ("the days multiplied," i.e., a long time passed by) refers not to the statement which follows, that Judah's wife died, but rather to the leading thought of the verse, viz., Judah's going to the sheep-shearing. ויּנּחם: he comforted himself, i.e., he ceased to mourn. Timnath is not the border town of Dan and Judah between Beth-shemesh and Ekron in the plain (Jos 15:10; Jos 19:43), but Timnah on the mountains of Judah (Jos 15:57, cf. Rob. Pal. ii. 343, note), as the expression "went up" shows. The sheep-shearing was a fte with shepherds, and was kept with great feasting. Judah therefore took his friend Hirah with him; a fact noticed in Gen 38:12 in relation to what follows. Gen 38:13-14 As soon as Thamar heard of Judah's going to this feast, she took off her widow's clothes, put on a veil, and sat down, disguised as a harlot, by the gate of Enayim, where Judah would be sure to pass on his return from Timnath. Enayim was no doubt the same as Enam in the lowland of Judah (Jos 15:34). Gen 38:15-18 When Judah saw her here and took her for a harlot, he made her an offer, and gave her his signet-ring, with the band (פּתיל) by which it was hung round his neck, and his staff, as a pledge of the young buck-goat which he offered her. They were both objects of value, and were regarded as ornaments in the East, as Herodotus (i. 195) has shown with regard to the Babylonians (see my Bibl. Arch. 2, 48). He then lay with her, and she became pregnant by him. Gen 38:19-21 After this…

It is a very ill-favoured story that is here told concerning Judah; one would not have expected such folly in Israel. Judah had buried his wife; and widowers have need to stand upon their guard with the utmost caution and resolution against all fleshly lusts. He was unjust to his daughter-in-law, either through negligence or design, in not giving her his surviving son, and this exposed her to temptation. I. Tamar wickedly prostituted herself as a harlot to Judah, that, if the son might not, the father might raise up seed to the deceased. Some excuse this by suggesting that, though she was a Canaanite, yet she had embraced the true religion, and believed the promise made to Abraham and his seed, particularly that of the Messiah, who was to descend from the loins of Judah, and that she was therefore thus earnestly desirous to have a child by one of that family that she might have the honour, or at least stand fair for the honour, of being the mother of the Messiah. And, if this was indeed her desire, it had its success; she is one of the four women particularly named in the genealogy of Christ, Mat 1:3. Her sinful practice was pardoned, and her good intention was accepted, which magnifies the grace of God, but can by no means be admitted to justify or encourage the like. Bishop Patrick thinks it probable that she hoped Shelah, who was by right her husband, might have come along with his father, and that he might have been allured to her embraces. There was a great deal of plot and contrivance in Tamar's sin. 1. She took an opportunity for it, when Judah had a time of mirth and feasting with his sheep-shearers. Note, Time of jollity often prove times of temptation, particularly to the sin of uncleanness; when men are fed to the full, the reins are apt to be let loose. 2. S…

38:12-13 Without a marriage, the family’s future was in jeopardy. • Judah’s wife died: This made Judah available to fulfill the responsibility of providing an heir.