working on the negative

Yaakov blesses his sons from his deathbed, yet Reuven loses the kingship and the Kehunah, and the pasuk blames his rushing "like water" more than the act itself. Why? And if Reuven did teshuva, why wasn't that enough? Rav Eliyahu Lopian in Lev Eliyahu points to something that teshuva on a sin may leave untouched. A family, a hidden envelope of money and a house turned upside down bring it home. Anyone who has said sorry for the same thing twice will recognize the problem.