17 By faith Abraham, when God tested him, offered Isaac as a sacrifice. He who had embraced the promises was about to sacrifice his one and only son,18 even though God had said to him, “It is through Isaac that your offspring will be reckoned.” 19 Abraham reasoned that God could even raise the dead, and so in a manner of speaking he did receive Isaac back from death.

1 Some time later God tested Abraham. He said to him, “Abraham!”“Here I am,” he replied. 2 Then God said, “Take your son, your only son, whom you love—Isaac—and go to the region of Moriah. Sacrifice him there as a burnt offering on a mountain I will show you.”

5 He said to his servants, “Stay here with the donkey while I and the boy go over there. We will worship and then we will come back to you.”

11 But the angel of the Lord called out to him from heaven, “Abraham! Abraham!”“Here I am,” he replied.12 “Do not lay a hand on the boy,” he said. “Do not do anything to him. Now I know that you fear God, because you have not withheld from me your son, your only son.”

15 The angel of the Lord called to Abraham from heaven a second time 16 and said, “I swear by myself, declares the Lord, that because you have done this and have not withheld your son, your only son, 17 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, 18 and through your offspring all nations on earth will be blessed, because you have obeyed me.”