Hebrews 11:38
men of whom the world was not worthy--roaming in lonely places, and on the mountains, and in caves and holes in the ground.
Revelation 6:15
Then all the kings of the earth, and the princes, and the generals, and the rich, and the powerful, and every slave and free man, 'hid themselves in the caves and under 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
men of whom the world was not worthy--roaming in lonely places, and on the mountains, and in caves and holes in the ground.
Revelation 6:15
Then all the kings of the earth, and the princes, and the generals, and the rich, and the powerful, and every slave and free man, 'hid themselves in the caves and under the rocks' of the mountains;