The Logic of Faith

Hebrews 11:17-19 (NIV)
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.