The Pulpit Commentary
Took Gath and her towns out of the hand of the Philistines; literally, her daughters. The compiler of Chronicles gives us this plain statement where, in the parallel place, we find, "took Metheg-ammah," or more exactly, Metheg-ha-ammah, the explanation of which word (see 2Sa_8:1) is not yet ascertained. Its literal signification is "the bridle or curb of the mother city," and may mark a special strong position which commanded Gath, or it may describe Gath as owning itself to such a position. Gesenius understands it to mean that David "subjected the metropolis of the Philistines to himself," quoting the Arabian proverb, To give one s bridle to any one, as equivalent to submitting to him. He quotes also Job_30:11. It may be noted that Ammah is spoken of (2Sa_2:24) as the name of a hill, otherwise unknown, however. Although David subdued so many places, he reigned over them, i.e, over many of them, still by "their own kings" (1Ki_4:24; 2Ch_9:26). Hence we find Gath with a king still in 1Ki_2:39.

The Pulpit Commentary
Brought gifts; i.e. in the light of tribute and of acknowledgment of subjection. There are curious additions to this passage in the parallel place, telling the punishment inflicted on Moab: "He smote Moab, and measured them with a line, casting them down to the ground [i.e. causing them to lie prostrate]; even with two lines measured he to put to death, and with one full line to keep alive." This appears to mean that he put to death two parts of them, and kept the third part alive. The reason of this deliberate and severe punishment is not stated. Once David and the Moabites had been on very different terms (1Sa_22:3, 1Sa_22:4; but see also Psa_60:8).

The Pulpit Commentary
Hadarezer; in the parallel places, Hadadezer; though our present form is found both in Samuel (e.g. 2Sa_10:16) and in other places in Chronicles, yet in all these places some manuscripts show Hadadezer (see Gesenius, 'Lexicon,' sub voce). Zobah. Part of Syria, east of Hamath, and for the most part of Coelo-Syria, north of Damascus, and stretching in the direction of the Euphrates. Possibly it is one with Ptolemy's Zake (1Sa_14:47; 2Sa_8:3-10; 2Sa_10:9; 1Ki_11:23-25). Hamath. In the valley of the Orontes, the northern boundary of the Holy Land. It is traceable from the time of the Exodus (Gen_10:18; Num_13:21; Num_34:8) to that of the Prophet Amos (Amo_6:12). Though in Zobah, it is probably not the Hamath-Zobah of 2Sa_8:3. To stablish his dominion. In the parallel place, "to restore," i.e; no doubt, to endeavour to do so, and that against the growing force of David. He had already suffered at the hand of Saul (1Sa_14:47, 1Sa_14:48).

The Pulpit Commentary
The parallel place (2Sa_8:4) omits, probably by error merely, the word "chariots," and reads for our seven thousand, "seven hundred." As the form of expression in the last two clauses of our present verse is the same in both cases, it is more natural to render, David houghed all the chariot horses, but reserved a hundred, i.e. a hundred horses unhoughed; he houghed all but a hundred. Our Authorized Version, in the parallel, gets over the difficulty by inserting "for," i.e. enough for, "a hundred chariots."

The Pulpit Commentary
The Hebrew text of Damascus, here, next verse, and also 2Ch_28:5, spells the word with a resh, omitting the dagesh forte in the mere following, which Gesenius instances (see his 'Lexicon') as the Syriac orthography.

The Pulpit Commentary
The word "garrisons" appears in the text in the parallel place, and would be justly supplied in our Hebrew text here.

The Pulpit Commentary
The shields; Hebrew שֶׁלֶט. Much doubt has been entertained as to the meaning of this word. Its etymology is uncertain. Gesenius derives it from a root signifying "hardness." For the most part, however, the context of the seven places of its occurrence which he instances (2Sa_8:7; 2Ki_11:10; 1Ch_18:7; 2Ch_23:9; So 2Ch_4:4; Jer_51:11; Eze_27:11) favour the rendering "shields," though the quotation from Jer_51:11 (literally, "fill ye the shields") is not so satisfactory. The wealth of Zobah is, of course, illustrated by these shields of gold.

The Pulpit Commentary
Tibhath, and… Chun. These names replace Betah and Berothai in the parallel place, in the former case with possibility of orthographic explanation, but not in the latter. The purpose for which David was glad to take their brass is not mentioned in Samuel, but only here. The brazen sea, and the pillars, and the vessels of brass (see 1Ki_7:14-47; 2Ch_4:1-18). In this latter place these subjects will be found treated more fully. This so-called "brazen sea" (אתֵ־יָם הַגְּחשֶׁת) took the place in Solomon's temple of (he earlier brazen laver (כִּיּוֹר גְחשֶׁת) of the Mosaic ritual (Exo_30:17-21; Le Exo_8:10, Exo_8:11; 1Ki_7:38). It is now called a sea, because of its large size. The use of the original laver is plainly told, for the priests to wash at it their hands and feet before offering sacrifices. It stood in the court of the tabernacle, between the altar and the door. The ten lavers of Solomon's temple were used for washing the sacrificial victims themselves (2Ch_4:6). The brazen sea (which was rather of copper than brass, however) rested upon twelve standing oxen, three turning their faces to each quarter of the heavens. Its height was five cubits, its diameter ten cubits, the thickness of its metal a handbreadth, and its capacity variously given at two thousand baths (1Ki_7:26) or three thousand (2Ch_4:5). It was removed from its supports of oxen by Ahaz (2Ki_16:17), and placed on a pedestal of stone. And it was eventually destroyed by the Assyrians (2Ki_25:13). And the pillars. (For these pillars of the porch, named Jachin and Boaz, see 1Ki_7:15-22; 2Ch_3:15-17.) And the vessels of brass. (For these, see 1Ki_7:40-51; 2Ch_4:16-18.)

The Pulpit Commentary
Tou. In the parallel place, spelt Toi. Nothing else is known of this King of Hamath, who now proffers his congratulations to David.

The Pulpit Commentary
Hadoram. In the parallel place written Joram. The Septuagint has the name spelt with d in both places, which has led to the suggestion that possibly the real name was Jedorum. Josephus suggests that Tou had been brought into subjection by Hadadezer, and wished by his present congratulations and valuable gifts to ingratiate himself with David for a purpose. Had war; literally, was a man of war; i.e. he had shown his addictedness to war, or had warred abundantly with Tou. It is evident that Tou had generally fared the worst in their encounters.

The Pulpit Commentary
From Edom. This is probably the correct reading, and not, as in the parallel, "from Aram," unless, as some think, both places were named in the original authority. From the children of Ammon. Perhaps the events narrated in our succeeding chapter are here referred to by the compiler. From Amalek (see 1Sa_30:1-20, 1Sa_30:26-31).

The Pulpit Commentary
Abishai… slew of the Edomites. The parallel place omits to say that it was by aid of Abishai that David slew these eighteen thousand Edomites. They are there called Syrians, which reading is at all events in keeping with the Aram of the previous verse. Abishai, here named son of Zeruiah, possibly served under "Joab son of Zeruiah" (1Ch_18:15), who is spoken of (1Ki_11:15, 1Ki_11:16) as very trenchant in this Edomite war, without any mention being made of Abishai. Psa_60:1-12. (title) probably speaks of an instalment of the eighteen thousand spoken of here, as the nation now suffered all but extermination. The valley of salt. Situate in Edom (1Ki_11:14-17; 2Ki_14:7; 2Ch_25:11). The word here used for "valley" is גֵּיא (Psa_23:4), not the more generic word עֵמֶק, and signifies rather "ravine." The phrase occurs twice with the article expressed, גֵיא חַמֶּלָח. The place is celebrated also for the achievements of Amaziah (in references just given), who proceeded hence with ten thousand prisoners, to precipitate them down the cliff, i.e. Petra (הַסֶּלַע, 2Ch_25:12). The real situation of this place is still doubtful. Since the time of the German traveller Geethen ('Reisen,' 2:356), and of Robinson ('Bibl. Res.,' 2:109), it has been generally assumed to be a tract of land extending some six miles south of the Dead Sea, and bounded at that distance by the range of hills which there runs across the country; but beside the consideration that the word "ravine" could not describe that tract of country, there are others very unfavourable to the supposition.

The Pulpit Commentary
Recorder. The word is of the same root with that in 1Ch_16:4, "to record." The exact duties and position of this officer are not stated in any one place, but may be gathered from 2Sa_8:16; 2Sa_20:24; 1Ki_4:3; 2Ki_18:18, 2Ki_18:37; 2Ch_34:8. From these notices, belonging to somewhat separate times, we may gather the dignity and responsibility and trust of the office which the recorder filled, altogether in excess of his duty as mere historical secretary.

The Pulpit Commentary
Abimelech the son of Abiathar. The reading in the parallel place is, "Abimelech the son of Abiathar," as also in 1Ch_24:6; but comparison of 1Sa_22:20; 2Sa_20:25; 1Ki_1:7, 1Ki_1:8, suggests that the right reading would be "Abiathar the son of Ahimelech." With this Mar_2:26 agrees, and tells of a correct manuscript, from which, indirectly, the quotation came. Shavsha. The parallel place reads Seraiaha; 2Sa_20:25 reads Sheva; and 1Ki_4:3 reads Shisha. The differences are probably due simply to errors of transcription. Scribe. The historical development of this title is obscure, and not easy to trace. The use of some form or other of the root is abundantly frequent from the times of the earliest parts of Scripture, in the sense of "numbering," or "declaring," or "recording." Perhaps our title of "secretary" would answer sufficiently to it, and all the better, because the Old Testament scribes were also of different leading kinds, like in some degree to our various secretaries of state. There was the kind of scribe of Jdg_5:14—where our Authorized Version is far from the mark, and should rather read "the staff of the scribe," in place of "the pen of the writer"—a military officer, whose duty it was to keep the muster-roll. There was the scribe of 2Ki_25:19—a passage which throws light on the former (see also Isa_33:18; Jer_52:25). There were the scribes of a more literary, lawyer-like, or clerk-like kind, as here, and in the parallel place, and in 2Sa_20:25; 1Ki_4:3; 1Ch_2:55. In the time of Hezekiah, if not before, the scribes became distinctly a class of men (Pro_25:1; Jer_8:8); and the times of the Captivity greatly enlarged their importance. Their exact duties in the best times of the monarchy are not laid down, but the dignified place the king's scribe held is evident from the company in which he is placed here and in the parallel passage.

The Pulpit Commentary
Benaiah the son of Jehoiada (see 1Ch_11:22-25; 1Ch_12:27; 2Sa_23:20-23). The Cherethites and the Pelethites. Two tribes of Philistines whom David attached. The meaning and derivation of these two names leave it possible to translate them at once, and to read, "the public executioners, and the public couriers," not treating them as proper names, and to this course Geseuius (see 'Lexicon') gives his sanction. On the other hand, a comparison of 1Sa_30:14 and 2Sa_15:18 would lead us to treat them as the names of people, although the Pelethites are net as identifiable in this sense as the Cherethites and Gittites. Anyway, it is evident they were the special guard of the king, and were faithful to David and to Solomon after him. Their duties included those of the executioner or lictor, and the courier. They are frequently mentioned on special occasions of the king's moving, and of danger (2Sa_15:18; 2Sa_20:7, 2Sa_20:23; 1Ki_1:38, 1Ki_1:44). Chief about the king. The Hebrew text here is הָרִאשֹׁגִים. The word used in the parallel place is כֹּחֲנִים, which signifies strictly "priests," but sometimes more generally" princes." This is, without doubt, the meaning of our text.