Joshua 1:6-7

6Be strong and confident and courageous, for you will give this people as an inheritance the land which I swore to their fathers (ancestors) to give them.

7Only be strong and very courageous; be careful to do [everything] in accordance with the entire law which Moses My servant commanded you; do not turn from it to the right or to the left, so that you may prosper and be successful wherever you go.