'Be Strong' in the Bible

Keep, therefore, all the commandments which I command thee this day that ye may be strong and go and conquer the land whither ye go to possess it,

But be strong that thou eat not the blood. For the blood, that is the life: and thou mayest not eat the life with the flesh:

Pluck up your hearts and be strong, dread not nor be afeared of them: for the LORD thy God himself will go with thee, and will neither let thee go nor forsake thee."

And Moses called unto Joshua, and said unto him in the sight of all Israel, "Be strong and bold, for thou must go with this people unto the land which the LORD hath sworn unto their fathers to give them, and thou shalt give it them to inherit.