There Judah saw the daughter of a certain Canaanite whose name was Shua. He took her and went in to her,
2. And Judah saw there a daughter of a certain Canaanite. I am not satisfied with the interpretation which some give of “merchant” to the word Canaanite. For Moses charges Judah with perverse lust, because he took a wife out of that nation with which the children of Abraham were divinely commanded to be at perpetual strife.
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
And Judah saw there a daughter of a certain Canaanite,.... Onkelos and Jonathan, and so Jarchi and Ben Gersom, interpret it a "merchant", to take off the disgrace of his falling in love with, and marrying a Canaanitish woman, which was forbidden by his ancestors Abraham and Isaac, and which his father avoided: whose name was Shuah; not the name of the woman he married...