Have not I? Figure of speech Erotesis (App-6), for emphasis.
God. Hebrew. Elohim. App-4.
with thee. Compare Exodus 3:12.
Related Commentaries of Joshua 1:9
Joshua 1:9
9 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 whithersoever thou goest.