"Praise the Lord!"

A priest falls on hard times and is forced to sell his beloved horse.
He explains to the new owner, "Remember now, you say, "Praise the Lord" to go and "Amen" to stop."
"Okay, I've got it!" the new owner says, and says, "Giddap" to no
result.
"Oh yeah, Praise the Lord" he says, and the horse starts off. This is
nice, but I'd like to go a bit faster, he says to himself, so he says, "Praise the Lord" again, and goes a bit faster. This continues a few
more times until he is running along very fast. There is a cliff ahead.
"Stop, Whoa, Stop, Oh yeah, Amen!!!!!"
The horse stops an inch from the edge of the cliff.
The guy wipes his brow and sighs, "Praise the Lord".