How to get a Christian novel published.

Write. 

Join a writer's group.  ACFW is a good Christian one.

Join those that don't charge as well!  You can find them online.

Never pay an agent to represent you.

Never pay to publish a book.

Know what type of publishing house you want to use: print on demand, New York genre houses, etc.

Finish a book.

Learn to write a synopsis.

Learn to format your work.

Research Sally Stuart's Market Guide for Christian book publishers and agents.

Submit to agents and publishers.  Don't worry if you get rejected.  We all do!

Edit it and resubmit.

Let others who WRITE read it and edit it, then fix it and resubmit.

Don't be surprised if it takes for or five years and a few books before you finally sell.  You don't go out and know how to build a building.  You go to architect school.  Same goes for writing!

Good places to check out publishers and agents. Search these below!

Predators and Editors - They'll tell you if it's a good or bad one.

SFFW - Science Fiction & Fantasy Authors - great information

Romance Writers of American - Good site

ACFW - American Christian Fiction Writers