What does the fourth dimension in Ephesians teach about the believer's spiritual position?
The fourth dimension in Ephesians points to the height, depth, width, and length—four dimensions beyond the three we live in physically. It teaches that the believer’s spiritual position is already in that added dimension; spiritually we are already there and live in four dimensions, because all things are yours in Christ.
Les explains that Paul’s prayer in Ephesians asks that the believer be filled with the wisdom of God and know the height, depth, width, and length. When he asks his classes how many dimensions that is, the answer is four, though we live in three. That indicates another dimension exists beyond our physical experience, yet spiritually the believer is already there. As Les puts it, we are living in four dimensions. This fits the great glory of being in Christ, an unfathomable well of wisdom and knowledge, where Paul, Apollos, Peter, the world, life, death, things present, and things to come are all yours.