The lectionary passage from the Hebrew scriptures this week provides us with a compelling story but one that is extremely challenging for modern sensibilities: the account of God's challenge to Abraham to prepare his son Isaac as a burnt offering. It's difficult for us to comprehend how God could ask this of Abraham and how Abraham could be so steadfast in his faith that he would seriously consider honoring the request -- indeed, some skeptics find this story so troubling that they lift it up as evidence to question the Christian faith.