Then Joab sent,.... Messengers to David, as soon as Uriah was killed:

and told David all the things concerning the war; how the siege had been carried on; what success they had had, good or ill; what their advantages and disadvantages; what men they had lost, and especially in one sally of the enemy upon them, for the sake of which the express was sent.

Joab immediately despatched a messenger to the king, to give him a report of the events of the war, and with these instructions: "When thou hast told all the things of the war to the king to the end, in case the anger of the king should be excited (תּעלה, ascend), and he should say to thee, Why did ye advance so near to the city to fight? knew ye not that they would shoot from the wall? Who smote Abimelech the son of Jerubbosheth (i.e., Gideon, see at Judges 6:32)? did not a woman throw down a millstone from the wall, that he died in Thebez (Judges 9:53)? why went ye so nigh to the wall? then only say, Thy servant Uriah the Hethite has perished." Joab assumed that David might possibly be angry at what had occurred, or at any rate that he might express his displeasure at the fact that Joab had sacrificed a number of warriors by imprudently approaching close to the wall: he therefore instructed the messenger, if such should be the case, to announce Uriah's death to the king, for the purpose of mitigating his wrath. The messenger seems to have known that Uriah was in disgrace with the king. At the same time, the words "thy servant Uriah is dead also" might be understood or interpreted as meaning that it was without, or even in opposition to, Joab's command, that Uriah went so far with his men, and that he was therefore chargeable with his own death and that of the other warriors who had fallen.

Then Joab sent and told David all the things concerning the war;

11:14-27 Adulteries often occasion murders, and one wickedness is sought to be covered by another. The beginnings of sin are much to be dreaded; for who knows where they will end? Can a real believer ever tread this path? Can such a person be indeed a child of God? Though grace be not lost in such an awful case, the assurance and consolation of it must be suspended. All David's life, spirituality, and comfort in religion, we may be sure were lost. No man in such a case can have evidence to be satisfied that he is a believer. The higher a man's confidence is, who has sunk in wickedness, the greater his presumption and hypocrisy. Let not any one who resembles David in nothing but his transgressions, bolster up his confidence with this example. Let him follow David in his humiliation, repentance, and his other eminent graces, before he thinks himself only a backslider, and not a hypocrite. Let no opposer of the truth say, These are the fruits of faith! No; they are the effects of corrupt nature. Let us all watch against the beginnings of self-indulgence, and keep at the utmost distance from all evil. But with the Lord there is mercy and plenteous redemption. He will cast out no humble, penitent believer; nor will he suffer Satan to pluck his sheep out of his hand. Yet the Lord will recover his people, in such a way as will mark his abhorrence of their crimes, to hinder all who regard his word from abusing the encouragements of his mercy.