'Hard' in the Bible

But the Lord struck down some of the people of Beth Shemesh because they had looked into the ark of the Lord; he struck down 50,070 of the men. The people grieved because the Lord had struck the people with a hard blow.

The men of Israel realized they had a problem because their army was hard pressed. So the army hid in caves, thickets, cliffs, strongholds, and cisterns.

Now the men of Israel were hard pressed that day, for Saul had made the army agree to this oath: "Cursed be the man who eats food before evening! I will get my vengeance on my enemies!" So no one in the army ate anything.