'Hard' in the Bible

And the Philistines put their forces in order against Israel, and the fighting was hard, and Israel was overcome by the Philistines, who put to the sword about four thousand of their army in the field.

But the hand of the Lord was hard on the people of Ashdod and he sent disease on them through all the country of Ashdod.

And when the men of Ashdod saw how it was, they said, Let not the ark of the God of Israel be with us, for his hand is hard on us and on Dagon our god.

So they sent and got together all the lords of the Philistines, and they said, Send away the ark of the God of Israel, and let it go back to its place, so that it may not be the cause of death to us and to our people: for there was a great fear of death through all the town; the hand of God was very hard on them there.

Why do you make your hearts hard, like the hearts of Pharaoh and the Egyptians? When he had made sport of them, did they not let the people go, and they went away?