What does Les mean by taking a jump up from the fundamentals?
It means moving from foundational teaching—such as Romans, Corinthians, and Galatians—into deeper spiritual things, specifically the more profound church truths presented in Ephesians. This jump is to deeper, more profound church truths, not merely a review of fundamentals.
Les explains that in the last series of programs, as they started the Book of Ephesians, the study goes into what he calls deeper spiritual things. Previously, they had been in Romans, the Corinthian letters, and Galatians. Now, he says, they sort of take a jump up—as he put it on the board—from the fundamentals to that which are deeper, more profound church truths. The phrase therefore describes a shift from foundational teaching to more advanced church truth in Ephesians.