Ephesian 3:19b - Filled with All of the Fulness of God

How can a human being, or a group of humans beings in the church, possibly be filled with all the fullness of God? This is not mysticism or spiritualism or pantheism, this is the reality of what God does in the hearts of His people, the church. We are called to participate in His work, to be holy and blameless, and He gives all that we need to be so.