Only Human by Tom Holt

After reading this book Phil Garnetts wrote this

God and Jay Christ have decided to take a break and go on a fishing trip leaving Kevin, God's younger son in charge. The only trouble is that Kevin's a teenager who decides to have play on Mainframe, God's computer, but ends up screwing things up... Some humans find that they have swapped places with paintings, machines, a Duke of Hell and a Lemming.
At the same time an alien, Zxprxp, is on a reconnaissance mission to Earth and encounters the humans containing the souls of a centuries old painting, a machine, a Vicar with the soul of a Duke of Hell and the Prime Minister with the soul of a Lemming!
In this outing Tom Holt takes a sideways look at theology and the Human condition, and as his his usual way he does it with style, class and a wicked sense of humour.
All Holt's books take an existing mythology and spins it on its heels, but that raises a fear... What if he's run out of myths to take the piss out of? But yet again he proves that fear to be unfounded by taking one of the world's most famous myths (or belief system if you prefer...), Christianity.
The characters all have a vulnerability that makes them real without being pathetic and retain their inherent farcical qualities. The plot races along with plenty of laughs and a well rounded story that we have come to expect from Tom Holt.
Tom Holt is on form with Only Human and you feel all the better for it...

After reading this book Thom Marrion wrote this

I was quite delighted to find this in paperback at the Munich airport. Tom Holt is one of my favorite authors, but for some reason the most recent book that I've ever found here in America is Ye Gods. Sucks to be me. There's this whole bibliography I knew nothing about that made me want to go to London and rob a bookstore. Anyway.
  Loved the book. Can't go wrong with a story that starts with God and Jesus going on a fishing trip and Kevin, little brother of Jesus, being left in charge. Enjoyed everything about this book, the Computer that was designed to be operated by an omnescient Being, the demon in a vicar's body, the liberation of machines, the revolutionary new philosophy of "not jumping" growing among the lemmings. Great great stuff.
  Now I just have to close that huge gap in my Tom Holt collection.