What is the only way to understand Scripture according to this teaching?
Understanding Scripture requires grasping progressive revelation. God does not reveal everything at once in Genesis; He unveils truth progressively as we come up through time. Paul later calls these hidden truths mysteries, secrets belonging to the Lord, revealed when God is ready.
Les explains that the only way to understand Scripture is to get a concept of progressive revelation. He points out that God is eternal and timeless, yet He is also the God of time, so He can hide in time things He wants kept hidden and reveal them when He is ready. God does not tell us everything in Genesis; He reveals things as we come up through time. Les connects this to Deuteronomy 29, where the secret things belong unto the Lord our God, and to Paul’s letters, where the word mystery (Greek mysterion) is used profusely for these secrets.