The "midst" of something in the Bible represents the thing that is most central and most important to the spiritual state being described, the motivation that drives everything else. In general this will be something we love or feel, because at the core of things we are what we love; our loves define us.

(Odkazy: Apocalypse Revealed 44, 90, 268; Arcana Coelestia 2252, 2940, 10153, 10365, 10557, 10635, 10641)

If we turn ourselves toward the Lord, we can get the full inflowing of His wisdom and love; if we turn away from Him we cast ourselves into cold and shadow -- we turn ourselves toward hell. In the Bible, "turning" generally refers to a change in spiritual state, as people turn themselves toward the Lord or away from the Lord.