| Barnes' Notes on the Bible Cast up a bank - See the marginal references. The throwing up of mounds against the walls of besieged places by the besiegers is well illustrated in the Assyrian sculptures. The trench - The "pomoerium," or fortified space outside the wall. When the mound was planted in the pomoerium the battering engines were able to approach close to the wall to make a breach.
Clarke's Commentary on the BibleThey cast up a bank against the city - The word סללה solelah, which we render bank, means, most probably, a battering engine of some kind, or a tower overlooking the walls, on which archers and slingers could stand and annoy the inhabitants, while others of the besiegers could proceed to sap the walls. That it cannot be a bank that stood in the trench, is evident from the circumstance thus expressed.
Gill's Exposition of the Entire BibleAnd they came and besieged him in Abel of Bethmaachah,.... That is, Joab and Abishai, with the forces under them, who pursued him hither: and they cast up a bank against the city; which some understand of a warlike machine or engine, with which stones were cast; but it rather seems to be a bank of earth thrown up, for the better working of such engines to more advantage against the city, by throwing from thence darts into the city, or stones against the walls of it, to batter it down; such banks were used in sieges, as that Caesar's soldiers raised in twenty five days, which was three hundred thirty feet broad, and eighty feet high (z); Kimchi interprets this of filling up the ditches round about the city with dust and earth, and so making it level, whereby they could come the more easily to the walls and batter them, or scale them, and take the city by storm: and it stood in the trench; the army under Joab stood where the trench round the city had been, now filled up: and all the people that were with Joab battered the wall to throw it down; with their engines, or whatever battering instruments they had; so, often, as Hesiod (a) says, a whole city suffers for one bad man. (z) Caesar. Comment. l. 7. c. 24. (a) Opera & Dies, l. 1. ver. 236.
Keil and Delitzsch Biblical Commentary on the Old TestamentThey besieged him (Sheba) in Abel-beth-maacah, and piled up a rampart against the city, so that it rose up by the town-moat (חל, the moat with the low wall belonging to it); and all the people with Joab destroyed to throw down the wall.
Geneva Study BibleAnd they came and besieged him in Abel of Bethmaachah, and they cast up a bank against the city, and it stood in the trench: and all the people that were with Joab {k} battered the wall, to throw it down. (k) That is, he went about to overthrow it.
Wesley's Notes 20:15 They - That is, Joab and his army. A bank - From whence they might either batter the wall, or shoot at those who defended it. It stood - The bank stood in, or near to the trench, or the wall of the city; so that the city was in great danger of being taken.
King James Translators' Notesin the trench: or, against the outmost wall battered: Heb. marred to throw down
Jamieson-Fausset-Brown Bible Commentary15. Abel of Beth-maachah-a verdant place-the addition of "Maachah" betokening that it belonged to the district Maachah, which lay far up the Jordan at the foot of Lebanon.
Matthew Henry's Concise Commentary20:14-22 Justly is that place attacked, which dares to harbour a traitor; nor will the heart fare better which indulges rebellious lusts, that will not have Christ to reign over them. A discreet woman, by her prudent management, satisfied Joab, and yet saved the city. Wisdom is not confined to rank or sex; it consists not in deep knowledge; but in understanding how to act as matters arise, that troubles may be turned away and benefits secured. A great deal of mischief would be prevented, if contending parties would understand one another. Let both sides be undeceived. The single condition of peace is, the surrender of the traitor. It is so in God's dealing with the soul, when besieged by conviction and distress; sin is the traitor; the beloved lust is the rebel: part with that, cast away the transgression, and all shall be well. There is no peace on any other terms.
Matthew Henry's Whole Bible CommentaryVerses 14-22 We have here the conclusion of Sheba's attempt. I. The rebel, when he had rambled over all the tribes of Israel, and found them not so willing, upon second thoughts, to follow him, as they had been upon a sudden provocation to desert David (having only picked up a few like himself, that sided with him), at length entered Abel-Beth-maacah, a strong city in the north, in the lot of Naphtali, where we find it placed, 2 Ki. 15:29. Here he took shelter, whether by force or with consent does not appear; but his adherents were most Berites, of Beeroth in Benjamin, v. 14. One bad man will find or make more. II. Joab drew up all his force against the city, besieged it, battered the wall, and made it almost ready for a general storm, v. 15. Justly is that place attacked with all this fury which dares harbour a traitor; nor will that heart fare better which indulges those rebellious lusts that will not have Christ to reign over them. III. A discreet good woman of the city of Abel brings this matter, by her prudent management, to a good issue, so as to satisfy Joab and yet save the city. Here is, 1. Her treaty with Joab, and her capitulation with him, by which he is engaged to raise the siege, upon condition that Sheba be delivered up. It seems, none of all the men of Abel, none of the elders or magistrates, offered to treat with Joab, no, not when they were reduced to the last extremity. They were stupid and unconcerned for the public safety, or they stood in awe of Sheba, or they despaired of gaining any good terms with Joab, or they had not sense enough to manage the treaty. But this one woman and her wisdom saved the city. Souls know no difference of sexes. Though the man be the head, it does not therefore follow that he has the monopoly of the brains, and therefore he ought not, by any salique law, to have the monopoly of the crown. Many a masculine heart, and more than masculine, has been found in a female breast; nor is the treasure of wisdom the less valuable for being lodged in the weaker vessel. In the treaty between this nameless heroine and Joab, (1.) She gains his audience and attention, v. 16, 17. We may suppose it was the first time he had ever treated with a woman in martial affairs. (2.) She reasons with him on behalf of her city, and very ingeniously. [1.] That it was a city famous for wisdom (v. 18), as we translate it. She pleads that this city had been long in such reputation for prudent knowing men that it was the common referee of the country, and all agreed to abide by the award of its elders. Their sentence was an oracle; let them be consulted and the matter is ended, all sides will acquiesce. Now shall such a city as this be laid in ashes and never treated with? [2.] That the inhabitants were generally peaceable and faithful in Israel, v. 19. She could speak, not for herself only, but for all those whose cause she pleaded, that they were not of turbulent and seditious spirits, but of known fidelity to their prince and peaceableness with their fellow-subjects; they were neither seditious nor litigious. [3.] That it was a mother in Israel, a guide and nurse to the towns and country about; and that it was a part of the inheritance of the Lord, a city of Israelites, not of heathen; and the destruction of it would lessen and weaken that nation which God had chosen for his heritage. [4.] That they expected him to offer them peace before he made an attack upon the, according to that known law of war, Deu. 20:10. So the margin reads (v. 18): They plainly spoke in the beginning (of the siege), saying, Surely they will ask of Abel, that is, "The besiegers will demand the traitor, and will ask us to surrender him; and if they do, we will soon come to an agreement, and so end the matter." Thus she tacitly upbraids Joab for not offering them peace, but hopes it is not too late to beg it. (3.) Joab and Abel's advocate soon agree that Sheba's head shall be the ransom of the city. Joab, though in a personal quarrel he had lately swallowed up and destroyed Amasa, yet, when he acts as a general, will by no means bear the imputation of delighting in bloodshed: "Far be it from me that I should delight to swallow up or destroy, or design it but when it is necessary for the public safety, v. 20. The matter is not so. Our quarrel is not with your city; we would hazard our lives for its protection. Our quarrel is only with the traitor that is harboured among you; deliver him up, and we have done." A great deal of mischief would be prevented if contending parties would but understand one another. The city obstinately holds out, believing Joab aims at its ruin. Joab furiously attacks it, believing the citizens all confederates with Sheba. Whereas both were mistaken; let both sides be undeceived, and the matter is soon accommodated. The single condition of peace is the surrender of the traitor. It is so in God's dealing with the soul, when it is besieged by conviction and distress: sin is the traitor; the beloved lust is the rebel; part with that, cast away the transgression, and all shall be well. No peace on any other terms. Our wise woman immediately agrees to the proposal: Behold, his head shall be thrown to thee presently. 2. Her treaty with the citizens. She went to them in her wisdom (and perhaps she had as much need of it in dealing with them as in dealing with Joab) and persuaded them to cut off Sheba's head, probably by some public order of their government, and it was thrown over the wall to Joab. He knew the traitor's face, and therefore looked no further, intending not that any of his adherents should suffer. The public safety was secured, and he felt no wish to gratify the public revenge. Joab hereupon raised the siege, and marched back to Jerusalem, with the trophies rather of peace than victory. | 
