All these (mainly) novels walk alongside Christian texts in some way, shape or form. Rather than reviewing them, although some have been reviewed here previously, I have suggested one, all-encompassing, discussion question. If you read only one make it Quarantine.
The Gospel According to the Son - Norman Mailer
The life of Jesus as he attends to the voices in his head.
The Good Man Jesus and the Scoundrel Christ - Philip Pullman
What if the Jesus of history and the Christ of faith were actually two people?
Quarantine - Jim Crace
What sorts of people were around in the days when spiritual novices wandered off into the wilderness to fast?
Three to See the King - Magnus Mills
Would you wager your current contentment against the possibility that there may be more to life than this?
Have a Little Faith - Mitch Albon
What does faith look like from the outside?
Blind Faith - Ben Elton
Does the fact that somebody is watching you all the time change your behaviour?
How possible is cross-cultural evangelism without selling our culture too?
How to be Good - Nick Hornby
What does 'being good' even mean?
Even the Dogs - Jon McGregor
Could there be such a person as one without value?
The Testament of Gideon Mack - James Robertson
Is there a difference between a true story and a story that really happened?