After the Lord told Joshua what to do as he began to lead Israel, the Lord said,
“Have I not commanded you? Be strong and of good courage; do not be afraid, nor be dismayed, for the LORD your God is with you wherever you go” (Joshua 1:9Joshua 1:9
English: World English Bible - WEB
9 Haven’t I commanded you? Be strong and of good courage; don’t be afraid, neither be dismayed: for Yahweh your God is with you wherever you go.
When the Lord commands, we have reason:
1. To be strong
2. To be of good courage
3. Not to fear
4. Not to be dismayed
When the Lord commands, He is with the one He commands and the job shall be successful.