Have not I commanded thee? Be strong and of a good courage; be not afraid, neither be thou dismayed: for the Lord thy God is with thee withersoever thou goest. Joshua 1:9
Sometimes when we are fearful, we need someone to tell us what to do. When you have doubts, a person you trust can tell you what to do and it helps you conquer your doubts.
Joshua is leading Israel into the promised land. Fear was one of their enemies, not just the inhabitants of the land. Joshua had to remind them several times of God’s command and his promise.
We too can be paralyzed by fear. Remember that God commands us to “be strong and of a good courage.” We are not to be afraid or dismayed. How can we do this? It is through the sure knowledge that our Lord and our God is with us, withersoever we go!