Mark Cahill

Q: Can God create a rock big enough that even he can't lift? A: NO!!! There are plenty of things God can't do, but that doesn't mean that He isn't God. It just means it is outside of his character.

Mark Cahill is an evangelist from Stone Mountain, Georgia who sells mass-market Christian paperback books, including One Thing You Can't Do In Heaven. His books mainly function as step-by-step instructions on how to annoy the hell out of friends, family, coworkers, and complete strangers by spreading the good news to the lost. He also publishes annoying little fundie tracts and strongly advocates littering the countryside with them.

Tracts
One of Cahill's favorite tactics is stuffing evangelism tracts inside of soda pop cartons in the local grocery store.

Great places for finding the lost also include malls, music and art festivals, beaches, sporting events, and bar sections of towns.

Books
His books help to educate the ignorant of the very real existence of angels and demons, as well as the dangers of evolutionists, Buddhists, fornicators, and pot smokers.

Pseudoscience
Cahill is well versed in fundamentalist pseudoscience, pseudoarchaeology, and other creationist jargon. For example, his indoctrination materials include the following guidance:

Fundies versus fundies
Cahill's formal training in religious studies and theology consists of attending Auburn University on a basketball scholarship and getting a bachelor's degree in business. Displaying the amazing ignorance common to many fundies, he pissed off Calvinists by calling them heretics and distanced himself from other ministries that "hold to Reformed Theology." Cahill, the false prophet and fable pusher, furnished this reply to Calvinist criticism: