Joshua 1:8-9

8This book of the law shall not depart from thy mouth; and thou shalt meditate upon it day and night, that thou mayest take heed to do according to all that is written therein; for then shalt thou have good success in thy ways, and then shalt thou prosper.

9Have I not commanded thee: Be strong and courageous? Be not afraid, neither be dismayed; for Jehovah thy 1God is with thee whithersoever thou goest.