Tim Murphy

“The doctrine of the sufficiency of Scripture has several practical applications to our Christian lives. The following list is intended to be helpful but not exhaustive. 1. The sufficiency of Scripture should encourage us as we try to discover what God would have us to think (about a particular doctrinal issue) or to do (in a particular situation). We should be encouraged that everything God wants to tell us about that question is to be found in Scripture. This does not mean that the Bible answers all the questions that we might think up, for “The secret things belong to the Lord our God” (Deut. 29:29). But it does mean that when we are facing a problem of genuine importance to our Christian life, we can approach Scripture with the confidence that from it God will provide us with guidance for that problem. There will of course be some times when the answer we find is that Scripture does not speak directly to our question. (This would be the case, for example, if we tried to find from Scripture what “order of worship” to follow on Sunday mornings, or whether it is better to kneel or perhaps to stand when we pray, or at what time we should eat our meals during the day, etc.) In those cases, we may conclude that God has not required us to think or to act in any certain way with regard to that question (except, perhaps, in terms of more general principles regarding our attitudes and goals). But in many other cases we will find direct and clear guidance from the Lord to equip us for “every good work” (2 Tim. 3:17). As we go through life, frequent practice in searching Scripture for guidance will result in an increasing ability to find accurate, carefully formulated answers to our problems and questions. Lifelong growth in understanding Scripture will thus include growth in the skill of rightly understanding the Bible’s teachings and applying them to specific questions.”
― Wayne A. Grudem, Making Sense of the Bible: One of Seven Parts from Grudem's Systematic Theology