Moses
Genesis 38:11BSB·traditional attribution

Then Judah said to his daughter-in-law Tamar, “Live as a widow in your father’s house until my son Shelah grows up.” For he thought, “He may die too, like his brothers.” So Tamar went to live in her father’s house.

John Calvin Reformed @genevareformer

11. Then said Judah to Tamar. Moses intimates that Tamar was not at liberty to marry into another family, so long as Judah wished to retain her under his own authority. It is possible that she voluntarily submitted herself to the will of her father-in-law, when she might have refused: but the language seems to mean, that it was according to a received practice, that...

Matthew Henry Presbyterian @wholebiblehenry

Here is, 1. Judah's foolish friendship with a Canaanite-man. He went down from his brethren, and withdrew for a time from their society and his father's family, and got to be intimately acquainted with one Hirah, an Adullamite, Gen 38:1. It is computed that he was now not much above fifteen or sixteen years of age, an easy prey to the tempter.

Commenting on Genesis 38:1-11

John Gill Reformed Baptist @doctorgill

And in process of time the daughter of Shuah, Judah's wife, died,.... Shuah was his wife's father, who was a Canaanite, Gen 38:2; what her name was is not certain, nor the exact time of her death; it was some time after Tamar was sent home to her father's house; and some take the death of Judah's wife to be a correction and reproof to...