¹⁷ By faith Abraham, when he endured God’s testing, offered his beloved son Isaac as a sacrifice. The one who had received God’s promise was willing to offer his only son; ¹⁸ God had told him, “It is through Isaac that your descendants will bear your name,”^{[a] 19} and he concluded that God was capable of raising him from the dead, which, figuratively, is indeed what happened.