John Walton in his book , The Bible Story Handbook, has some good notes on Genesis 22. However the last line says, “Finally, this is not a story to tell young children.”
So we are telling the story in church before the Children’s Church leaves the service. this means all kids over 5 years are in church.
It is a hard story – Abraham asked to take his own sons life. Is it too much for kids? Will they become insecure at home?
It also depends on the telling – how much the story-teller magnifies the drama and the fear and loathing that went along with this event. Something else to ponder this