¹⁷ It was by faith that Abraham offered Isaac as a sacrifice when God was testing him. Abraham, who had received God’s promises, was ready to sacrifice his only son, Isaac, ¹⁸ even though God had told him, “Isaac is the son through whom your descendants will be counted.”^{[a] 19} Abraham reasoned that if Isaac died, God was able to bring him back to life again. And in a sense, Abraham did receive his son back from the dead.