This book describes how medieval Jewish Bible scholars sought to answer the question of what is meant by the Angel's message from God to Abraham: 'Now I Know', as written in Genesis 22 verse 12. It examines these scholars' comments on the nineteen verses in Genesis that tell the story of Abraham's readiness to sacrifice his own son Isaac, the Aqedat Yiṣḥaq. It explores the answers they found to the question of what, indeed, this story is trying to tell us. Is it a drastic way to condemn the practice of child sacrifice? Does it call for replacing human sacrifices with animal...