KJV:
And it shall come to pass, while my glory passeth by, that I will put thee in a clift of the rock, and will cover thee with my hand while I pass by:
NASB:
and it will come about, while My glory is passing by, that I will put you in the cleft of the rock and cover you with My hand until I have passed by.
KJV:
To go into the clefts of the rocks, and into the tops of the ragged rocks, for fear of the LORD, and for the glory of his majesty, when he ariseth to shake terribly the earth.
NASB:
In order to go into the caverns of the rocks and the clefts of the cliffs Before the terror of the LORD and the splendor of His majesty, When He arises to make the earth tremble.