1. What a brave commander Joshua was. See, (1.) His conduct and prudence. God gave him the hint (v. 2) that he should lay an ambush behind the city, but left him to himself to order the particulars, which he did admirably well. Doubtless wisdom strengthens the wise more than ten mighty men, Eccl. vii. 19. (2.) His care and industry (v. 10): He rose up early in the morning, that he might lose no time, and to show how intent his mind was upon his business. Those that would maintain their spiritual conflicts must not love their ease. (3.) His courage and resolution; though an army of Israelites had been repulsed before Ai, yet he resolves to lead them on in person the second time, v. 5. Being himself also an elder, he took the elders of Israel with him to make this attack upon the city (v. 10), as if he were going rather to sit in judgment upon them as criminals than to fight them as enemies. (4.) His caution and consideration (v. 13): He went that night into the midst of the valley, to make the necessary dispositions for an attack, and to see that every thing was in good order. It is the pious conjecture of the learned bishop Patrick that he went into the valley alone, to pray to God for a blessing upon his enterprise, and he did not seek in vain. (5.) His constancy and perseverance; when he had stretched out his spear towards the city (v. 18, a spear almost as fatal and formidable to the enemies of Israel as the rod of Moses was) he never drew back his hand till the work was done. His hands in fighting, like Moses's in interceding, were steady till the going down of the sun. Those that have stretched out their hands against their spiritual enemies must never draw them back. Lastly, What Joshua did in the stratagem is applicable to our Lord Jesus, of whom he was a type. Joshua conquered by yielding, as if he had himself been conquered; so our Lord Jesus, when he bowed his head and gave up the ghost, seemed as if death had triumphed over him, and as if he and all his interests had been routed and ruined; but in his resurrection he rallied again and gave the powers of darkness a total defeat; he broke the serpent's head, by suffering him to bruise his heel. A glorious stratagem!