Listen to and apply this sermon here. I feel that Spurgeon's remarks aptly conclude a discussion on the trustworthiness of Scripture:
God’s word is the soul’s manna and the soul’s water of life. How greatly we ought to prize each word of divine teaching. But, dear brethren, do you not think that many are very neglectful of God’s instructive voice? In the Bible we have precious doctrines, precious promises, precious precepts, and above all a precious Christ, and if a man would really live upon these choice things, he might rejoice with joy unspeakable and full of glory. But how often is the Bible left unread! And so God is not heard.