The Holy One — blessed be He! — said unto Abraham, What should I tell thee? and with what shall I bless thee? Shall I tell thee to be perfectly righteous, or that thy wife Sarah be righteous before me? That ye both are already. Or shall I say that thy children shall be righteous? They are so already. But I will bless thee so that all thy children which shall in future ages come forth from thee shall be just like thee.w Whence do we learn this? From Gen xv. 5: " And he said unto him, So (like thee) shall thy seed be.w