Object: a big piece of chain and a sign with the words "Do Not Enter."

Good morning, boys and girls. Have you ever ridden in a car with your mother or father and seen this sign? [Hold up the "Do Not Enter" sign.] You are just about to turn into this street when you have to put on your brakes and stop. The place you want to go is right up that block, but they won't let you go past the sign because the street is torn up, or it is one way, the other way. That sign is an obstacle. It keeps us from going where we want to go.

I need a couple of volunteers for another obstacle that I brought with me. [Take out the chain. Have them take the ends and stretch it out across the chancel.] Now, here is an obstacle. What do you call this? That's right, a chain, and when…