'Hard' in the Bible

Wherever they went out, the hand of the Lord was against them for evil, as the Lord had taken his oath it would be; and things became very hard for them.

And Samson said, Now I have a hard question for you: if you are able to give me the answer before the seven days of the feast are over, I will give you thirty linen robes and thirty changes of clothing;

But if you are not able to give me the answer, then you will have to give me thirty linen robes and thirty changes of clothing. And they said to him, Put your hard question and let us see what it is.

Then Samson's wife, weeping over him, said, Truly you have no love for me but only hate; you have put a hard question to the children of my people and have not given me the answer. And he said to her, See, I have not given the answer even to my father or my mother; am I to give it to you?

And the spirit of the Lord came rushing on him, and he went down to Ashkelon and, attacking thirty men there, took their clothing from them, and gave it to the men who had given the answer to his hard question. Then, full of wrath, he went back to his father's house.

And turning, they went in flight to the rock of Rimmon in the waste land: and on the highways five thousand of them were cut off by the men of Israel, who, pushing on hard after them to Geba, put to death two thousand more.