As he is passing one of the carpenters hits his thumb with a hammer
"F***ing Hell!" he cries.
The pope is horrified and tells the carpenter "My son, this is the house of God, such profanities are not appropriate here. If you have hurt yourself in some way you should offer your prayer to our Lord Jesus and he will give you relief from your suffering"
Next day as the Pope is passing the same carpenter chops off his fingers with a saw.
"Oh my God! Sweet Jesus please help me now!" says the carpenter.
With that the fingers levitate themselves and re-attach themselves to the poor carpenter's hand, all the blood disappears and the carpenter wiggles his fingers.
"F***ing Hell !" says the Pope.