The angel of the Lord called to Abraham from heaven a second time and said, “I swear by myself, declares the Lord, that because you have done this and have not withheld your son, your only son, I will surely bless you and make your descendants as numerous as the stars in the sky and as the sand on the seashore. Your descendants will take possession of the cities of their enemies, and through your offspring, all nations on earth will be blessed, because you have obeyed me.” (22:15-18)
The entire story of Abraham is centered around the birth of Isaac, for Isaac was the key to God’s covenant relationship with Abraham− the Son of Promise. The Hebrews author tells us that Abraham’s faith was so strong by that time that he was thinking God would simply raise him from the dead if he had been sacrificed,
