The sufficiency of Scripture answers the question if we are to look for other words from God in addition to those we have in Scripture, or is the Bible enough for knowing what God wants us to think or do? The definition can be described that Scripture contained all the Words of God He intended His people to have at each stage of redemptive history, and that it now contains everything we need God to tell for salvation, for trusting Him perfectly, and for obeying Him perfectly.
Paul mentions in 2 Timothy 3:15 that “from childhood you have known the sacred writings which are able to give you the wisdom that leads to salvation through faith which is in Christ Jesus,” which means that in Scripture we have all the words of God we need in order to be saved.
David says in Psalm 9:10 that “and those who know Your name will put their trust in You. For You, O Lord, have not forsaken those you seek You,” which means that in Scripture we have all the words of God we need in order to trust Him.
In Jeremiah 7:23 it is said that “this is what I commanded them, saying, ‘Obey My voice, and I will be your God, and you will be My people; and you will walk in all the way which I command you, that it will may be well with you’,” which means that in Scripture we have all the words of God we need in order to obey Him.
The sufficiency of Scripture implies that God has not spoken to mankind any more words which He requires us to believe or obey other than those which we have now in the Bible. It does not imply that God cannot add any more words to those He has already spoken to His people. It rather implies that man cannot add on his own initiative any words that God has already spoken (Deuteronomy 4:2; 12:32, Proverbs 30:5-6, Revelation 22:18-19). Practically it should encourage us as we try to discover what God would have us to think or to do. We should be encouraged that everything God wants to tell us about for our salvation, trust and obedience is to be found in Scripture. This doesn’t mean that the Bible answers all questions that we might think up, for “the secret things belong to the Lord our God” (Deuteronomy 29:29). 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.
Summary and Conclusion
What then can we say in summary? It ultimately comes down to a desire for wisdom, for “the beginning of wisdom is: acquire wisdom; and with all your acquiring, get understanding” (Proverbs 4:7), and a step of faith “so that the proof of your faith, being more precious than gold which is perishable, even though tested by fire, may be found to result in praise and glory and honor at the revelation of Jesus Christ” (1 Peter 1:7). We must not forget the importance of the role of the Holy Spirit in overcoming the effects of our fallen condition, and to give us revelation of the truth of the Bible. We have in the Bible God’s very words, and we must not try to improve on them in some way, for this cannot be done. Rather, we should seek to understand, approach them with an open and humble heart and mind, and then trust them and obey them with our whole heart.
Does Bibliology help you in your understanding of the Bible? In other words, to what extent does the Bible have authority in your life? Do you feel encouraged that Scripture is meant to be understood by all, although sometimes it takes effort? Does understanding the necessity of Scripture stir you to more study of it? Do you feel that the Bible provides sufficient answers for your life? If not, is that because of a lack of understanding, of trust or of obedience? How does this help you in sharing your faith with non-believers? All these questions are so relevant to our every day life that I think it is sometimes good to understand the theory (doctrine) behind these things so that we can be more focused and determined in our efforts.