One day a preacher went out to buy a horse, so he went to the man's house who was selling the horse. The man said this horse has been around a lot of Christians so he doesn't respond to regular commands he only responds to commands "praise the Lord" to go and "amen" to stop.

So the man was riding home and the horse was running towards a cliff then the preacher yells woe! woe! then he remembered just in time and he yells Amen! so the horse stops right at the edge of the cliff. Praise the Lord