Then she arose and went away, and taking off her veil she put on the garments of her widowhood.
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.
Commenting on Genesis 38:12-23
And Judah sent the kid by the hand of his friend the Adullamite,.... Who went with him to Timnath, and was privy to all this wickedness, and kept the secret; but would have acted the more friendly and faithful part had he dissuaded him from it: him he employed to carry the kid he had promised, and not any of his servants, for the greater...
Gen 38:19-21 After this had occurred, Thamar laid aside her veil, put on her widow’s dress again, and returned home. When Judah, therefore, sent the kid by his friend Hirah to the supposed harlot for the purpose of redeeming his pledges, he could not find her, and was told, on inquiring of the inhabitants of Enayim, that there was no קדשׁה there.
Commenting on Genesis 38:19-21