The sufficiency of Scripture means 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 all the words of God we need for salvation, for trusting him perfectly, and for obeying him perfectly.
Wayne GrudemIt is scripture alone, not conservative Evangelical tradition or any other human authority, that must function as the normative authority for the definition of what we should believe. The authority of the scripture means that all the words in scripture are God's words in such a way that to disbelieve or disobey any word of scripture is to disbelieve or disobey God.
Wayne GrudemThe clarity of Scripture means that the Bible is written in such a way that its teachings are able to be understood by all who will read it seeking God's help and being willing to follow it.
Wayne GrudemIt is important to insist on the historical truthfulness of the narrative of the fall of Adam and Eve. Just as the account of the creation of Adam and Eve is tied in with the rest of the historical narrative in the book of Genesis, so also this account of the fall of man, which follows the history of man's creation, is presented by the author as straightforward, narrative history
Wayne Grudem