Jacob’s Dysfunctional Posterity

Let us muse this day from Genesis 38:1-3 and ‘Jacob’s Dysfunctional Posterity’. Jacob’s boy Judah had an appetite for strange women who led him to marry a Canaanite woman. This marriage produced a son by the name of Er. The Bible says in verses 6-7 that Er married a girl by the name of Tamar but Er was so wicked that the Lord slew him. Here, not only were Jacob’s children chasing the vanity of this world but his grandchildren were following in these same steps. I wonder if the principle of Deuteronomy 6:6-9 were ever applied with Jacob’s posterity?