You know, most of you, doubtless, that Isaac, Abraham’s son, was come to him out of the common course of nature—when he and his wife, Sarah, were of an age which seemed to make all chance of a family utterly hopeless. You remember how God promised Abraham that this boy should be born to him at a certain time, when He appeared to him on the plains of Mamre, in that most solemn and deep-meaning vision of which I spoke to you last Sunday. You remember, too, no doubt, most of you, how God had promised Abraham again and again, that in his seed, his children, all the nations of the earth should be blessed; so that all Abraham’s hopes were wrapped up in this boy Isaac; he was his only son, whom he loved; he was the child of his old age, his glory and his joy; he was the child of God’s promises. Every time Abraham looked at him he felt that Isaac was a wonderful child: that God had a great work for him to do; that from that single boy a great nation was to spring, as many in multitude as the stars in the sky, or the sand on the sea-shore, for the great Almighty God had said it. And he knew, too, that from that boy, who was growing up by him in his tent, all the nations in the earth should be blessed: so that Isaac, his son, was to Abraham a daily sacrament, as I may say, a sign and a pledge that God was with him, and would be true to him; that as surely as God had wonderfully and beyond all hope given him that son, so wonderfully and beyond all hope He would fulfil all His other promises. Conceive, then, if you can, what Abraham’s astonishment, and doubt, and terror, and misery, must have been at such a message as this from the very God who had given Isaac to him: “And it came to pass after these things that God did tempt Abraham, and said unto him, Abraham: and he said, Behold, here I am. And he said, Take now thy son, thine only son Isaac, whom thou lovest, and get thee into the land of Moriah; and offer him there for a burnt-offering upon one of the mountains which I will tell thee of.”