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)

In Isaiah 40:12 'to weigh the mountains in a balance, and the hills in scales,' signifies that the celestial aspects of love and charity are from the Lord, and that He alone disposes their states.

(Odkazy: Arcana Coelestia 3101)