38:7 Tamar - "palm tree", i.e. "graceful".  Bathshua was apparently
	instilling Caananite culture in Judah's sons.  The very reason why
	Israel was commanded to remain separate.  But then Jacob had laid the
	groundwork by taking his family to Shechem instead of going to Bethel
	as God told him.  Having recognized his own mistake in insisting on
	choosing his own wife, Judah doesn't give Er that courtesy.  The
	marriage arrangement was no doubt of mutual benefit to the two families
	- but it is a disaster for Tamar.  However, God chose Tamar to be the
	line of Christ.
	No details are given of Er's sin, but he shattered any girlhood
	hopes of Tamar.  While God has personally killed groups of people,
	Er is the first individual that God personally kills.