'Mightily' in the Bible

And the children of Israel cried unto the LORD: for he had nine hundred chariots of iron; and twenty years he mightily oppressed the children of Israel.

And the Spirit of the LORD came mightily upon him, and he rent him as he would have rent a kid, and he had nothing in his hand: but he told not his father or his mother what he had done.

And the Spirit of the LORD came mightily upon him, and he went down to Ash'kelon and killed thirty men of the town, and took their spoil and gave the festal garments to those who had told the riddle. In hot anger he went back to his father's house.

And when he came unto Lehi, the Philistines shouted against him: and the Spirit of the LORD came mightily upon him, and the cords that were upon his arms became as flax that was burnt with fire, and his bands loosed from off his hands.

And Samson said, “Let me die with the Philistines!” And he stretched out with all his might [collapsing the support pillars], and the house fell on the lords and on all the people who were in it. So the dead whom he killed at his death were more than those whom he had killed during his life.