Genesis 38:1 "...at that time..." Have just seen Joseph sold into slavery. Not sure how much time as passed, but shouldn't be long after. 2 "...daughter...Canaanite...Shua...married her..." Son of Jacob doing the same thing as Esau, intermarrying with the Canaanites. 6 "...took a wife for Er his firstborn..." Not sure of the marrying age, but …
Black & White with Shades of Gray 