You have to ask the question, who/what inspired the author of the book? Think about it!
No offence taken and I intend you no offence.
Let’s assume for a minute that Jesus is in fact God who became a God-man (fully human and fully divine). Because we believe in His divinity, we believe Jesus revealed to us the whole Truth and nothing but the Truth. Now Jesus taught that when we die, we are judged and merit either Heaven or Hell for all eternity. That immoral people cannot inherit the Kingdom of God. That Satan is a real enemy who beguiles and seduces us with his lies.
Along side this, we have several pagan religions and eastern religions etc telling us that there is no one God, that there are several paths to God. They teach us doctrines such as re-incarnation, self-realization (self divinity), that there’s no absolute truth, that personal morality is your own business etc. These all fly in the face of Christian teaching.
Paganism and Christianity can’t both be true because of the obvious conflicts. But which do you think is the safer “bet”?
Which is more likely to please God? If after we die, I turn out to be wrong, there’s no harm done. I can start over again.
If it turns out that you are wrong and that Jesus is in fact the Son of God and that you didn’t live in accordance with His teachings, then God help you! Do you see my point?
God bless,
Noel.