Hebrews 11:38
of whom the world was not worthy, wandering in deserts and mountains, and in caves and openings of the earth.
Revelation 6:15
And the kings of the earth and the great men and the chiliarchs and the rich and the mighty and every servant and freeman hid themselves in caves and in the rocks of the mountains,
Treasury of Scripture Knowledge
Summary
And the hand of Midian prevailed against Israel: and because of the Midianites the children of Israel made them the dens which are in the mountains, and caves, and strong holds.
Bible References
Dens
Hebrews 11:38
of whom the world was not worthy, wandering in deserts and mountains, and in caves and openings of the earth.
Revelation 6:15
And the kings of the earth and the great men and the chiliarchs and the rich and the mighty and every servant and freeman hid themselves in caves and in the rocks of the mountains,