In one sense the doctrine of the trinity is a mystery that we will never understand fully.
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 GrudemThe 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 Grudem