Making Sense of Things
Human beings have been given two key abilities - rational minds, and spiritual freedom. If we develop our rationality, we can use our freedom well. So... it's important for us to understand spiritual truths, like the ones linked here.
The human race is evolving and changing. God isn't, but our ability to receive his leading makes it look that way. The stories in the Bible describe different states of religious consciousness - or "churches", from Adam and Eve, to Noah, to Abraham, and then to the Christian church.
It would be awfully nice to "know" that you're saved. A lot of Christians believe that you're saved if you accept Jesus Christ as your personal savior -- and in a sense that's true. If you REALLY accept Jesus Christ, and you live the way he told us to - shunning evils, loving the Lord, and loving the neighbor - then you're opening yourself to receive his love.