'Rocks' in the Bible

and lo, the vail of the sanctuary was rent in two from top unto bottom, and the earth did quake, and the rocks were rent,

These are in your love-feasts craggy rocks; feasting together with you, without fear shepherding themselves; clouds without water, by winds carried about; trees autumnal, without fruit, twice dead, rooted up;

and the kings of the earth, and the great men, and the rich, and the chiefs of thousands, and the mighty, and every servant, and every freeman, hid themselves in the dens, and in the rocks of the mountains,

and they say to the mountains and to the rocks, 'Fall upon us, and hide us from the face of Him who is sitting upon the throne, and from the anger of the Lamb,'