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.
(References: Apocalypse Revealed 44, 90, 268; Arcana Coelestia 2252, 2940, 10153, 10365, 10557, 10635, 10641)
Matthew 13:47-49
47
"Again, the Kingdom of Heaven is like a dragnet, that was cast into the sea, and gathered some fish of every kind,
48
which, when it was filled, they drew up on the beach. They sat down, and gathered the good into containers, but the bad they threw away.
49
So will it be in the end of the world. The angels will come forth, and separate the wicked from among the righteous,
