Here’s a sneak preview, as described on pages 139-140 of Heaven Without Her:
“There are, of course, dozens of other religions out there, some interesting, some pretty wacky. I checked them out at random as their names came up.
“For my little research project, I included in this group those that claim to be Christian but are in reality Buddhist, Hindu, Islamic or Gnostic in nature – Christian Science and Unity School, to name just a couple.
"I included eminently progressive, ‘it doesn’t matter what you believe as long as you’re not a Christian fundamentalist’ groups that seem to worship, above all and often exclusively, tolerance of everything except a plain reading of the Bible.
“I included bizarre worldviews like Scientology as well as explicitly evil paths like Satanism.
“And I included an array of religions devoted to worshipping the gods of nature, from Japan’s native Shintoism to various expressions of Native American spirituality.
“The only readily apparent common denominator among all these worldviews was the idea that whatever your view of Heaven or Paradise or Nirvana, what gets you there is living the right kind of life.
“Except for Christianity.
“Christianity says that what gets you there is Jesus.”
As I discovered, a sincere and careful exploration of the facts leads to only one possible conclusion: There’s Christianity, and there’s everything else.