An anonymous commenter appears to be considerably less broad-minded:
If I were to pick up a book that was "supposed" to be Christian fiction, and, after reading, I found the Christian principles not implemented, I would NO LONGER read that particular author. There is a certain standard that Christian novels must maintain.
1) Main characters don't have to be, or become, Christian, or followers of God. (Examples: Jezebel, Cain)
2) Plots don't have to include an earthly reward for the just. Bad things happen to good people. They even die. (Example: John the Baptist)
3) Sexual relationships don't have to be only between a man and a woman who are married to each other. (Example: David) A Christian novel, in Hunt's sense, could involve other moral transgressions, such as thievery, lying, gossip, taking God's name in vain, or idol worship.
1) it "should illustrate some aspect of Christian faith."
2) it should avoid the use of profanity or obscenity.
3) it should be an example of good writing.
4) it should offer hope.