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.

They 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.

And 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.

They 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.

And 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.

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.

in the trench: or, against the outmost wall

battered: Heb. marred to throw down

15. 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.

20:14-22 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.