Our father of faith, Abraham had certain things going on in his life that got transferred to his offspring. Embedded in the blood is a powerful communication of characteristics - both spiritually and physically.
Abraham married a fair [beautiful] woman, so did Isaac [Rebekah] and Jacob [he gladly worked for 14 years for this beautiful woman called - Rachael].
Marrying someone beautiful isn't wrong in anyway but check out this pattern: Abraham lied that his wife was his sister to avoid being killed for her beauty. So also Isaac lied in Gerar about his wife. Abraham slept with his wife's maid and consequently fathered Ishaemel with her; that trait somehow skipped Isaac and because of that it landed two-fold on Jacob [his two wives made him sleep with their respective maids!]. Abraham's wife died before him and he eventually remarried. Jacob also lost his wife - Rachael at childbirth. There was also the trait of the younger brother being the head - Jacob, Manasseh et al.
