The faithful know that it is the Body of Christ if they don't neglect to be the Body of Christ. May they become the Body of Christ if they want to live of the Spirit of Christ.
In the material world, a foot is one thing, a ladder is another and wings still another. In the interior world, however, feet, ladders, and wings are the affections of a good will, with them, we walk, we climb, and we fly.
(En. in ps. 38, 2)
God has to be searched and invoked in the secret of a rational soul, which is called the interior man.
(De magistro 1)