'Mightily' in the Bible

The Spirit of the Lord came upon him mightily, so that he tore him as one tears a young goat though he had nothing in his hand; but he did not tell his father or mother what he had done.

Then the Spirit of the Lord came upon him mightily, and he went down to Ashkelon and killed thirty of them and took their spoil and gave the changes of clothes to those who told the riddle. And his anger burned, and he went up to his father’s house.

When he came to Lehi, the Philistines shouted as they met him. And the Spirit of the Lord came upon him mightily so that the ropes that were on his arms were as flax that is burned with fire, and his bonds dropped from his hands.