J.I. Packer in Truth and Power:
When Christians affirm the authority of the bible, meaning that biblical teaching reveals God's will and is the instrument of his rule over our lives, part of what they are claiming is that Scripture sets before us the factual and moral nature of things. God's law corresponds to created human nature, so that in fulfilling his requirements, we fulfill ourselves. The gospel of Christ answers to actual human need, as glove fits hand, so that all our responses to God work for our good….