- Evidence That Demands a Verdict, by Josh McDowell
- More than a Carpenter, by Josh McDowell
- The Case for Christ, by Lee Strobel
- Mere Christianity, by C.S. Lewis
Finally, this is addressed in probably each of these books, but as for your last comment. It's not unthinkable to imagine Jesus was so insane he was willing to die for his "personal views on ethics" (Although there's precious little evidence to support this, see the "Lord, Liar, Lunatic" argument). Nor is it outside the realm of possibility to think that perhaps his closest 12 followers were willing to die for a charade (Although again, there's no logical reason to support this idea)—I imagine stranger situations have occurred.
But consider the vast history of Christianity, littered with martyrs whose only mandate to escape death was simply, "Deny Christ" and were yet unwilling to do so. It begins to become disingenuous to suggest that across 2,000 years people have been willing to die for one man's "personal views on ethics" when all that would be required to avoid said death is to simply say, "Jesus is not God", unless of course you were utterly convinced it was true.