Rabbi Berachiah said: The sweet savour (of the ram) ascended before the Holy One, blessed be He, as though it were the sweet savour of Isaac, and He swore that He would bless him in this world and in the world to come, as it is said, "By myself have I sworn, saith the Lord, because thou hast done this thing"; and it says, "That in blessing I will bless thee, and in multiplying I will multiply thy seed, as the stars of the heaven" (Gen. 22:16, 17). "That in blessing" (refers) to this world; "I will bless thee," in the world to come; and "I will greatly multiply thy seed," in the future that is to come.