'Mightily' in the Bible

They [the stricken, deprived of all in which they had trusted] will go into the caves of the rocksAnd into the holes of the ground [fleeing]From the terror and dread of the LordAnd from the splendor of His majesty,When He arises to terrify the earth.

To go into the caverns of the rocks and into the clefts of the [ragged] cliffs [as they flee]From the terror and dread of the Lord and the splendor of His majesty,When He arises to terrify the earth.

He will cut down the thickets of the forest with an iron axe,And Lebanon (the Assyrian) will fall by the Mighty One.

The Lord will go forth like a warrior,He will stir up His zeal like a man of war;He will shout out, yes, He will raise a war cry.He will prevail [mightily] against His enemies.