Heb. 11:17, ‘By faith Abraham, when he was tried, offered up Isaac; and he that received the promises offered up his only-begotten son.’ Here is a son, an only son, a son on whom the promises were fixed, and this son to fall under the weight of his own father’s hands: an act that occasioned not only a conflict between his obedience and his natural affection, but a kind of riddle between his obedience and his faith. How should he offer Isaac, and yet believe that in Isaac’s seed all the nations should