The Need to be Obedient to ScriptureIf God has revealed himself and his purposes to us in Jesus Christ as he is known to us through all the Scriptures, then clearly we are under a total obligation to submit our lives to the teaching of the Bible. It is a particular temptation of student life to imagine that truth is for the mind alone; but for Scripture 'knowing the truth' implies living it out in particular situations. In the OT, truth is primarily a moral quality implying the characteristic of dependability or faithfulness in action (e.g. Ps. 51:6). This understanding is expressed also in John's concern for doing the truth (Jn. 3:21, 1 Jn. 1:6). So this final section is integral to the exposition of the Christian doctrine of authority, for Christian truth in the deepest sense exists only where there is a mind which is set both to understand it and to obey it. If our passion for truth does not imply a passion for obedience to truth, then we are not really serious about it.
In the end the doctrine of the authority is eminently practical. It confronts us with a specific challenge: to obey all that the Bible teaches, all of the time. Nothing could be more searching or down to earth than that.
- p. 66, Know the Truth by Bruce Milne (italics original)