God's authority is designed
God's authority vested in scripture is designed, as all God's authority is designed, to liberate human beings, to judge and condemn evil and sin in the world in order to set people free to be fully human. That's what God is in the business of doing. That is what his authority is there for. And when we use a shorthand phrase like `authority of scripture that is what we ought to be meaning. It is an authority with this shape and character, this purpose and goal. (N.T. Wright)
"For there is one God and one mediator between God and mankind, the man Christ Jesus; Salvation exists in no one else, for there is no other name under heaven given to men by which we must be saved; Therefore Christ is the mediator of a new covenant, so that those who are called may receive the promised eternal inheritance, now that He has died to redeem them from the transgressions committed under the first covenant; Therefore He is able to save completely those who draw near to God through Him, since He always lives to intercede for them." [1 Ti. 2:5; Acts 4:12; Heb. 9:15; 7:25)