Have a boy and a girl come to the front of the room. Then have one of them stand on a chair – he/she represents the Christian. Have the Christian on the chair try to pull the unbeliever up with them onto the chair. (Then explain how hard it is to witness to someone who doesn’t believe.) Now have the unbeliever pull the Christian down and explain to them how easy it is for a Christian to fall down when they’re with a non-believer.