¹⁷ By faith Abraham, when God tested him, offered Isaac as a sacrifice.^(A) 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.”^{[a](B) 19} Abraham reasoned that God could even raise the dead,^(C) and so in a manner of speaking he did receive Isaac back from death.