how should the sufficiency of Scripture affect YOU?

Wayne Mack helps by offering three insights:

1. The inerrant Bible to which Christians are committed as an authority in life teaches that God has provided for us in His Word whatever is true and necessary for successful living. It declares that God has given us, in the Bible, everything we need for being in right relationship with God, ourselves, and other people.

2. Because this is true, professing Christians have two options: either they must yield to its teaching on this matter or they must abandon the idea that the Bible is inerrant and authoritative. It is either inerrant and authoritative and also sufficient or it is none of these things. If the Bible claims to be sufficient in the ways and for the purposes previously delineated and it is not, then you cannot say it is inerrant and authoritative. Given what the Bible teaches about itself, you simply cannot have it both ways.

3. This final conclusion is a natural concomitant of accepting the truthfulness of the first conclusion: Because the Bible asserts its own sufficiency for counseling-related issues, secular psychology has nothing to offer for understanding or providing solutions to the non-physical problems of people. When it comes to counseling people, we have no reason for depending on the insights of finite and fallen men. Rather, we have every reason to place our confidence in the sure, dependable, and entirely trustworthy revelation of God given to us in Holy Scripture. That is because it contains a God-ordained, sufficient, comprehensive system of theoretical commitments, principles, insights, goals, and appropriate methods for understanding and resolving the non-physical problems of people. It provides for us a model that needs no supplement. God, the expert on helping people, has given us in Scripture counseling perspectives and methodology that are wholly adequate for resolving our sin- related problems.

(from Wayne Mack, "Sufficiency of Scripture in Counseling," TMSJ 9, no. 1 [Spring 1981]: 82).