The account of Abraham’s attempted sacrifice of Isaac in Genesis 22:1-19 is surely the climactic point in the development of the faith of Abraham. After all that he had been through in relation to the promises of God that he would have a son, it must have been heart breaking for him to have to do what the Lord entreated him and offer Isaac as a burnt sacrifice. What would he do? Obey God and so prove the genuineness of his faith.