John Gills Exposition of the Bible Commentary - Genesis 38:1
And it came to pass at that time ,.... This some refer to the time of Jacob's coming from Padanaram into Canaan, soon after he came to Shechem, and before the affair of Dinah; but to this may be objected the marriage of Judah at an age that may seem too early for him, his separation from his brethren, and having a flock of his own to keep, which seems not consistent with the above history: wherefore it is better to connect this with the history of Joseph's being sold into Egypt; for though... read more
Matthew Henry's Complete Commentary - Genesis 38:1-11
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. Note, When young people that have been well educated begin to change their company, they will soon change their manners, and lose their good education.... read more