'Depths' in the Bible

I am the LORD who searches the heart, who tests the inner depths to give to each person according to what he deserves, according to the fruit of his deeds.

“Flee away, turn back, dwell in the depths,O inhabitants of Dedan,For I will bring the disaster of Esau upon himAt the time I punish him.

“Run away, flee! Dwell in the depths,O inhabitants of Hazor,” declares the Lord;“For Nebuchadnezzar king of Babylon has formed a plan against youAnd devised a scheme against you.