'Be Strong' in the Bible

And the spirit of Jehovah will be upon him, and he will judge Israel, and he will go forth to war: and Jehovah will give into his hand Cushan-Rishathaim, king of Aram; and his hand will be strong upon Cushan-Rishathaim.

And the hand of Midian will be strong upon Israel: from the face of Midian the sons of Israel made to them clefts which are in the mountains, and caves and fastnesses.