(3) Why doth my lord?--Even in the eyes of the unscrupulous Joab David's act was abominable. Joab never gives evidence of being influenced by religious motives, but his natural shrewdness sufficed to show him that David's act was at variance with the fundamental principle of the national existence. Chronicles adds to Joab's words, "Why will he be a cause of trespass to Israel?" The strong objection of Joab shows that there was something obviously wrong in the action of David.

And against the captains.--Joab's objections were sustained by his subordinate officers, and David carried through his sinful act by sheer force of self-will.

Verse 3. - Why doth my lord the king delight in this thing? Joab was an unscrupulous and irreligious man; but he was clear headed, and far more statesmanlike than David (2 Samuel 19:5-7). He saw whither the king was drifting, and that the increase of the royal power, resulting from successful war, would be fatal to the liberties of Israel. Probably, too, though he had consented to carry out Uriah's murder, yet he despised David for it. When he had murdered Abner to avenge Asahel, David had deprived him of his command, and he had to endure a long period of disgrace; and now David uses him to murder one altogether innocent. Joab, we may feel sure, noted the degradation of David's character, and drew the conclusion that he was not the man to be trusted at the head of a military despotism. Warned thus by what he saw, his mind reverted to the principles of the theocracy, and their truth and value became more clear to his understanding; and honourably he remonstrates with David for violating them.

24:1-9 For the people's sin David was left to act wrong, and in his chastisement they received punishment. This example throws light upon God's government of the world, and furnishes a useful lesson. The pride of David's heart, was his sin in numbering of the people. He thought thereby to appear the more formidable, trusting in an arm of flesh more than he should have done, and though he had written so much of trusting in God only. God judges not of sin as we do. What appears to us harmless, or, at least, but a small offence, may be a great sin in the eye of God, who discerns the thoughts and intents of the heart. Even ungodly men can discern evil tempers and wrong conduct in believers, of which they themselves often remain unconscious. But God seldom allows those whom he loves the pleasures they sinfully covet.And Joab said unto the king,.... Not so rudely and insolently as he did on account of his mourning for Absalom, but in a more modest, decent, and polite manner:

now the Lord thy God add unto the people (how many soever they be) an hundredfold; he wished his subjects were an hundred times more numerous than they were:

and that the eyes of my lord the king may see it; that he might live to see with his own eyes so great an increase:

but why doth my lord the king delight in this thing? he being now old, and therefore it might seem strange to indulge such curiosity, pride, and vanity, and besides quite needless and useless: the numbering of them would not make them more or less; and they were all the king's servants, who were ready to obey him whenever he needed them, whether numbered or not; and it might be prejudicial to them, and bring down the wrath of God upon them, as well as be a troublesome and expensive business; all which, though not expressed here, is hinted at in 1 Chronicles 21:3.