The doctrine of the Sufficiency of Scripture says that in the Bible we have all the words of God we need for understanding His character and nature, for our salvation, and for living in obedience to Him (2 Timothy 3:14-17). There is no other source for God’s infallible truth and we must not add to it (Deuteronomy 12:32, Revelation 22:18-19). It is not that all there is to know is in the Bible, but rather that all we need to know has been revealed in the Bible. So anything not revealed there is not necessary for us to know (Deuteronomy 29:29). This doctrine also teaches that although the Bible does not mention things that were not invented at its time of writing, it does give us the principles to apply carefully to modern issues. The Bible speaks to all situations of life and nothing falls outside its authority.
