Christianity is totally different than any other world religion. Every other religion requires some level of goodness to enter their version of heaven. In other words all other religions require you to earn your way into heaven, nirvana or whatever good place is in store for you. This would fall in line with our way of thinking - anything good must be earned. If we were to make up a religion, our new religion would be created in order to get the best behavior from us. Even just finding peace would have to be earned, through meditation, giving up material possessions, or some type of personal sacrifice.
According to scripture we can never be good enough to enter heaven. In other words we can't earn our way to paradise. Unlike the made up mythological gods that seem to be created in the image of imperfect humans, the God of scripture is perfect. Think about this, if there is some sort of intelligent power behind creation, any meniscal flaw would have to weaken that power. Because we all are flawed I do not think any of us can really comprehend who and what God really is. A power so great to create the universe and to know everything about all of us would have to be flawless. What is so intriguing about God is His love for us (discussed more in the next rational reason for believing in God). The redemption aspect of Christianity, in which Jesus is the critical link, is unique. The short story is we have to be perfect to be with God, because we are not, and because part of Gods perfection is His love, He provided a way for us to be reconciled with Him through the death and resurrection of Jesus. If you click on the button below titled "The Only Way" you will get a more detailed explanation why Christianity is so different then other religions and why Jesus is so significant (the long story).
The Bible is also unique. It would make sense if there was a creator, such as an engineer that designs and builds a piece of equipment, a "user guide" would have to be provided. The purpose of the user guide would be to make certain the user gets the most out of that machine. The Bible is our user guide. It provides a way for us to know how to live in harmony with the universe. It is provided in order for us to get the very most out of this life and the life after (I will provide a link to books offering compelling evidence that there is something to life after death). What makes the Bible so different than other "holy books" is how it was constructed. Holy books are generally written by one person, the teacher of a religion or cult. The Bible has 40 authors from Kings to farmers and fishermen, written from three continents in three different languages, over a period of centuries, yet it provides a unified message. The Biblical Evidence rational reason will provide more information about this incredible book.