'Strengthen' in the Bible

And Samson called unto the LORD, and said, O Lord GOD, remember me, I pray thee, and strengthen me, I pray thee, only this once, O God, that I may be at once avenged of the Philistines for my two eyes.

And on the fourth day they arose early in the morning, and he prepared to go; but the girl's father said to his son-in-law, "Strengthen your heart with a morsel of bread, and after that you may go."

And on the fifth day he arose early in the morning to depart; and the girl's father said, "Strengthen your heart, and tarry until the day declines." So they ate, both of them.

And the people, the men of Israel, strengthen themselves, and add to set the battle in array in the place where they arranged themselves on the first day.