“After these things God tested Abraham. He said to him, ‘Abraham!’ And he said, ‘Here I am.'” Here begins one of the most disturbing stories in the Old Testament. God asks Abraham to kill his son. In the end (spoiler alert!) he doesn’t have to . But what sort of God demands that – and what sort of person is prepared to do it? Is this simply an appalling story we should ignore – or does it plumb the profound depths of human experience at the limit?