Keep not thou silence, O God: hold not thy peace, and be not still, O God.
For, lo, thine enemies make a tumult:and they that hate thee have lifted up the head.
They have taken crafty counsel against thy people, and consulted against thy hidden ones. Psalm 83:1-3.
In my humble opinion "Hidden Ones" are the Jewish remnant that flee to the mountains.
Not the raptured.