Midst
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.
(références: Apocalypse Revealed 44, 90, 268; Arcana Coelestia 2252, 2940, 10153, 10365, 10557, 10635, 10641)
Lamentations 2:18-19
18
Their heart cried to the Lord: wall of the daughter of Zion, let tears run down like a river day and night; Give yourself no respite; don't let the apple of your eye cease.
19
Arise, cry out in the night, at the beginning of the watches; Pour out your heart like water before the face of the Lord: Lift up your hands toward him for the life of your young children, that faint for hunger at the head of every street.
