13. Be of good courage. The word of courage is often the source of strength and the secret of victory.
Behave ourselves valiantly. “Play the men” (2 Sam. 10:12). Each before the other was setting forth his determination to do his utmost that victory might be assured. When men face the problems of life with such a spirit, success is far more likely, whatever the odds against them.
For our people. The men of Israel were fighting not only for themselves but for their people and for their God. That put infinitely greater spirit into the struggle in which they were engaged. Israel was fighting for its existence and the honor of Jehovah.
Let the Lord do. The battle in which Israel was engaged was not only man’s but God’s. It was therefore proper that the pious wish be expressed that God would manifest Himself, and that He would cause His own will to prevail. The spirit behind the prayer was, “Thy will be done” (see Matt. 26:39). God’s will was that Israel should be established in the land He had promised them.