Sometimes when I have presented biblical truth, atheists and other non Christians charge me that I must prove my position and that "quotes from the Bible prove nothing". This is often because I was not trying to "prove" the Bible. Christians do not have to prove the existence of God, or the validity of the the Bible. The proof of God's existence is everywhere, accessible and observable to everyone. The orderly laws which govern the universe (including the cells - organs - systems of the human body) are proof of God's existence and design.
The proof of humanity's fallen nature, and need for a Savior is also plain to see in the the deeds of all people. The fact that millions of unborn children are brutally murdered and unceremoniously discarded and many people think that's ok, is proof of human depravity. War, racism, rioting and all kinds of lovelessness and violence are proof of humanity's sinfulness, and need for a Savior.
In light of these things, the word of God, the Bible, speaks for itself and needs no proving. It will ring true to everyone who has been taught by God and is receptive to His truth. All human beings are created by, and in the image of God who is love. All human beings have become corrupt with sin. Jesus Christ the Son of God came and taught about the kingdom of God and warned us to repent so that we may enter into the kingdom and not be condemned. He gave His own life on the cross for our sin, and rose on the third day. Those who trust in Him will receive pardon for their sin, and be reconciled to the heavenly Father.
