Only 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. 

'你要剛強勇敢，因為你要帶領這些人佔領我起誓賜給他們祖先的土地。 ' 約書亞記 1:6