The story is like the other stories about gods demanding acts of devotion and obedience. Gods who are never satisfied. The first audience for this story would have heard this before--it would have been familiar. But then it's not. The story takes a shocking turn that comes out of nowhere. This God disrupts the familiarity of the story by interrupting the sacrifice. Picture an early audience gasping. What? This God stopped the sacrifice? The gods don't do that! Second, the God in this story provides. Worship and sacrifice was about you giving to the gods. This story is about this God giving to Abraham. A God who does the giving? A God who does the providing?