I have often wondered about the purpose of Scripture. Why so many words, if by the internal evidence everything can be stated in one short sentence?
I came to the conclusion that Scripture that, just like the Law given to Moses, it is not intended to make us feel good about ourselves, but to make us feel good about God, to show us how far we have fallen and how far God has reached down to us to help us. Scripture shows us both, the true nature of humankind and the true nature of God.
J.I. Packer in one of his books puts it this way; "The Holy Scripture are the lifeline God throws us in order to ensure that he and we stay connected while the rescue is in progress." I like that picture, especially when at the end of the life line we see the Holy Spirit holding on to us.
So if reading of Scripture makes you feel bad about yourselves, know that God is greater than your feelings and keep on reading.