1 Chronicles 11:15

“David longed, and said, Oh that one would give me drink . . . of the well of Beth-lehem--(See on Sa2 23:15). This chivalrous act evinces the enthusiastic devotion of David's men, that they were ready to gratify his smallest wish at the risk of their lives. It is probable that, when uttering the wish, David had no recollection of the military posted at Beth-lehem. It is generally taken for granted that those who fought a way to the well of Beth-lehem were the three champions just mentioned [see on Ch1 11:13]. But this is far from being clear. On the contrary, it would seem that three different heroes are referred to, for Abishai (Ch1 11:20) was one of them. The camp of the Philistines was in…”

“of the thirty captains: or, captains over the thirty, 2Sam. 23:13-39 the cave: Jos 12:15; Sa1 22:1; Mic 1:15 in the: Ch1 14:9; Sa2 5:18, Sa2 5:22; Isa 17:5 Rephaim: Jos 15:8, the giants 1 Chronicles 11:16”

“In Ch1 11:15-19 (cf. Sa2 23:13-17) there follows an exploit of three others of the thirty, whose names have not been handed down. ראשׁ השּׁלושׁים, the thirty chiefs (not, as Thenius wrongly interprets the words, these three knights the chief parts, i.e., these three chief knights), are David's heroes hereafter mentioned, the thirty-two heroes of the third class named in Ch1 11:26-40 (or vv. 24-39 of Samuel). That three others, different from the before-mentioned Jashobeam, Eleazar, and Shammah are intended, is plain from the omission of the article with שׁלושׁה; for if these three were spoken of, we would have השׁלושׁה, as in Ch1 11:18. For further remarks on this exploit, which was probably…”