The central message of this sermon is that the Bible is a trustworthy and authoritative book written by God through human instruments, and its words are completely inspired and without error. This message advances the belief that the Bible is not just a collection of human writings, but a divine revelation from God to humanity. The teacher wants listeners to understand that the Bible's authority and trustworthiness come from its inspiration by God, and that this means it has absolute authority in all matters of faith and conduct. By emphasizing the Bible's perfection and completeness, the teacher is also highlighting the importance of trusting and obeying God's word, rather than relying on human opinions or interpretations. Ultimately, the sermon is an affirmation of the Bible as a unique and authoritative book that stands apart from other religious texts and writings.