Dario has a point, start your logline with the protag, but don’t make him a novice.

Alex also has a point, so:

“The world?s most altruistic priest must avoid eternal damnation when the seven deadly sins come to earth in human form and wage for his soul.”

A perfect logline for me, although you can argue that the logline must describe how he’s going to fight these 7 sins in human form.

If you think about it, it is strange, “sins” turning in to “human form”. Maybe all deadly sins made by humans from the beginning of time (after Adam and Eve are kicked from Heaven) combined now take shape as 7 evil man. These evil man approach the priest one after the other to sell him:

LUST: in the form of a girl he had a huge crush on before he became a priest but could not have – no he can;

GLUTTONY: the priest gets invited to homeless shelter by the new owner running it to talk about building new shelters. While he sees the a luxury dinner that is prepared for only him, he goes and sit at the table of the homeless who eat only bread with cheese.

PRIDE: he is offered a job as a TV priest.

AND SO ON… But somewhere in the middle a bell must ring -the priest is on to them – so them trying to ‘trick’ him must become more and more subtle. Knowing this you must decide the order of the possible Sins presented to him.

For inspiration: http://www.screenplayfest.com/archives/review/unholy-swap