# Men will go ... from the terror

"Men will go ... to hide from the terror"

# the caves of the rocks

"the caves in the rocks." These are large rocks, not small stones that can be held in the hand.

# from the terror of Yahweh

because they are very afraid of Yahweh

# the glory of his majesty

"the beauty he has as king" 

# when he rises to terrify the earth

"when Yahweh takes action and causes the people of the earth to be terribly afraid of him"