'Dreadful' in the Bible

Go up into the rocky cliffs, hide in the ground. Get away from the dreadful judgment of the Lord, from his royal splendor!

They will go into caves in the rocky cliffs and into holes in the ground, trying to escape the dreadful judgment of the Lord and his royal splendor, when he rises up to terrify the earth.

so they themselves can go into the crevices of the rocky cliffs and the openings under the rocky overhangs, trying to escape the dreadful judgment of the Lord and his royal splendor, when he rises up to terrify the earth.