Joshua 1:9

Be strong. For the third time God gives this command (see verses 6, 7). Joshua had shown courage in years gone by, yet God repeats this precept again and again. Joshua was humble in his own eyes, not distrustful of God’s power and His promises, but diffident of himself and of his own wisdom, and strength, and sufficiency for the task that lay ahead. Perhaps this feeling was due in part to association with so great a man as Moses. God highly esteems a humble spirit, for God can work for and with such a person (see Isaiah 57:15). The very humility of Joshua testifies eloquently to his fitness for the sacred task committed to him.