Why does Paul mention height, depth, width, and length if we only live in three dimensions?
Paul names four dimensions—height, depth, width, and length—to show that reality is not limited to our three physical dimensions. The fourth points to a dimension beyond physical perception, one that believers already occupy spiritually. In Christ, they are living in four dimensions, not merely the three we experience now.
Les explains that when Paul prays in Ephesians that believers might be filled with the wisdom of God and know the height, depth, width, and length, that is four dimensions. Since we live in three, it tells him there is another dimension out there that we do not know physically, but spiritually we are already there. We are living in four dimensions. This connects with the unfathomable well of wisdom and knowledge in Christ, where all things are yours.
May be able to comprehend with all saints what is the breadth, and length, and depth, and height;