If you're like me, having a reference to Facebook in a show title makes me gag. If we're lucky 'friending someone' won't even be a thing in a couple of years, so for the show's premise to rely on Facebook makes me a little weary. It's about an atheist who has his life turned upside down when God friends him on Facebook. It sounds more like a premise for a Saturday Night Live sketch than a show, but it could possibly confront a lot of philosophical questions. Seeing as though it's on CBS, those philosophical questions will probably be very tame.
Give this show a chance, but be prepared to give up on it if it sticks to the whole Facebook thing too much. Sometimes the ideas with the most potential turn out to be the corniest.