How did I not know about this??

"After a terrifying biblical apocalypse descends upon the world, a group of strangers stranded in a remote truck stop diner in the Southwest unwittingly become humanity's last line of defense when they discover the diner's young waitress is pregnant with the messiah."

Post-apocalyptic setting! Strangers joining together to do battle! Angels carrying machine guns! Paul Bettany as the archangel Michael. This movie was made for me, people.