"Abraham has a message from God. It is a truly awful one: he
must sacrifice his only son, Isaac. Abraham is in emotional
torment. He loves his son, but he is also a devout man
and knows he has to obey God. In this story from Genesis in
the Old Testament, Abraham takes his son up to the top of a
mountain, Mount Moriah, ties him to a stone altar and is about
to kill him with a knife, as God has instructed. At the very last
second, though, God sends an angel who stops the slaughter.
Instead, Abraham sacrifices a ram that is caught in some bushes
nearby. God rewards Abraham’s loyalty by allowing his son
to live."