The hold - Not the same place which is so named in 2 Samuel 5:7, 2 Samuel 5:9, but probably the cave (or hold) of Adullam 2 Samuel 23:13. The invasion most probably took place before David had completed his buildings in the city of David; and is probably referred to in 2 Samuel 23:8-17.

The Philistines came up to seek David - Ever since the defeat of the Israelites and the fall of Saul and his sons, the Philistines seem to have been in undisturbed possession of the principal places in the land of Israel; now, finding that David was chosen king by the whole nation, they thought best to attack him before his army got too numerous, and the affairs of the kingdom were properly settled.

But when the Philistines heard that they had anointed David king over Israel,.... That the civil war in the nation was now at an end, which they hoped would have issued in their destruction, and therefore lay still and quiet; but now being united under the government of David, and he hereby greatly strengthened and become powerful; and hearing also of his success against Jerusalem, and the friendship he had contracted with Hiram king of Tyre, they thought it was high time to bestir themselves, and put a stop to his power and greatness; and now it was, as Kimchi thinks, that David penned the second psalm, which begins, "why do the Heathen rage", &c. Psalm 2:1,

all the Philistines came up to seek David: in order to fight him, all the five principalities of the Philistines combined together against him; perhaps his old friend Achish king of Gath was now dead, or had now entertained a different opinion of him:

and David heard of it; that they had invaded his kingdom, and sought to fight him:

and went down to the hold; some fortified place or strong hold near Jerusalem, which lay lower than the city, or than the strong hold of Zion, in which David dwelt; hither he went, not so much for safety, or with an intention to abide there, but as a rendezvous for his men, and to prepare to meet the Philistines.

David gains two Victories over the Philistines (compare 1 Chronicles 14:8-17). - Both these victories belong in all probability to the interval between the anointing of David at Hebron over all Israel and the conquest of the citadel of Zion. This is very evident, so far as the first is concerned, from the words, "When the Philistines heard that they had anointed David king over Israel" (2 Samuel 5:17), not when David had conquered the citadel of Zion. Moreover, when the Philistines approached, David "went down to the hold," or mountain fortress, by which we cannot possibly understand the citadel upon Zion, on account of the expression "went down." If David had been living upon Zion at the time, he would hardly have left this fortification when the Philistines encamped in the valley of Rephaim on the west of Jerusalem, but would rather have attacked and routed the enemy from the citadel itself. The second victory followed very soon after the first, and must therefore be assigned to the same period. The Philistines evidently resolved, as soon as the tidings reached them of the union of all the tribes under the sovereignty of David, that they would at once resist the growing power of Israel, and smite David before he had consolidated his government.

2 Samuel 5:17-18

"The Philistines went up to seek David," i.e., to seek him out and smite him. The expression לבקּשׁ presupposes that David had not yet taken up his abode upon Zion. He had probably already left Hebron to make preparations for his attack upon the Jebusites. When he heard of the approach of the Philistines, he went down into the mountain fortress. "The hold" cannot be the citadel of Zion (as in 2 Samuel 5:7 and 2 Samuel 5:9), because this was so high that they had to go up to it on every side; and it is impossible to sustain the opinion advanced by Bertheau, that the verb ירד (to go down) is used for falling back into a fortification. המּצוּדה (the hold), with the definite article, is probably the mountain stronghold in the desert of Judah, into which David withdrew for a long time to defend himself from Saul (vid., 2 Samuel 23:14 and 1 Chronicles 12:8). In 2 Samuel 5:18 the position of the Philistines is more minutely defined. The verse contains a circumstantial clause: "The Philistines had come and spread themselves out in the valley of Rephaim," a valley on the west of Jerusalem, and only separated from the valley of Ben-hinnom by a narrow ridge of land (see at Joshua 15:8). Instead of ינּטשׁוּ the Chronicles have יפשׁטוּ, they had invaded, which is perfectly equivalent so far as the sense is concerned.

But when the Philistines heard that they had anointed David king over Israel, all the Philistines came up to seek David; and David heard of it, and went down to the hold.

5:17 The hold - To some fortified place to which his people might conveniently resort from all places, and where he might intrench his army, which lay towards the Philistines.

2Sa 5:17-25. He Smites the Philistines.

17. when the Philistines heard that they had anointed David king over Israel-During the civil war between the house of Saul and David, those restless neighbors had remained quiet spectators of the contest. But now, jealous of David, they resolved to attack him before his government was fully established.

5:17-25 The Philistines considered not that David had the presence of God with him, which Saul had forfeited and lost. The kingdom of the Messiah, as soon as it was set up in the world, was thus attacked by the powers of darkness. The heathen raged, and the kings of the earth set themselves to oppose it; but all in vain, Ps 2:1, &c. The destruction will turn, as this did, upon Satan's own kingdom. David owns dependence on God for victory; and refers himself to the good pleasure of God, Wilt thou do it? The assurance God has given us of victory over our spiritual enemies, should encourage us in our spiritual conflicts. David waited till God moved; he stirred then, but not till then. He was trained up in dependence on God and his providence. God performed his promise, and David failed not to improve his advantages. When the kingdom of the Messiah was to be set up, the apostles, who were to beat down the devil's kingdom, must not attempt any thing till they received the promise of the Spirit; who came with a sound from heaven, as of a rushing, mighty wind, Ac 2:2.