A narrator reads a passage of scripture while actors dramatize it. When the teacher yells "freeze", the actors freeze and an actor (or actors -- you choose) comes in from the sidelines. They tap an actor on the shoulder and take his or her place in the action. The teacher says "Action!" and the dramatization continues. Continue freezing the action until everyone has had a turn to act or until the passage is complete.
This is a really fun activity, especially if you have a group that enjoys acting, as I did.