Matthew Henry on 1 Chronicles 4:24–end
We have here some of the genealogies of the tribe of Simeon (though it was not a tribe of great note), especially the princes of that tribe, Ch1 4:38. Of this tribe it is said that they increased greatly, but not like the children of Judah, Ch1 4:27. Those whom God increases ought to be thankful, though they see others that are more increased. Here observe, 1. The cities allotted them (Ch1 4:28), of which see Jos 19:1, etc. When it is said that they were theirs unto the reign of David (Ch1 4:31) intimation is given that when the ten tribes revolted from the house of David many of the Simeonites quitted these cities, because they lay within Judah, and seated themselves elsewhere. 2. The groun…
Read the whole note in the consoleJamieson-Fausset-Brown on 1 Chronicles 4:31
These were their cities unto the reign of David--In consequence of the sloth or cowardice of the Simeonites, some of the cities within their allotted territory were only nominally theirs. They were never taken from the Philistines until David's time, when, the Simeonites having forfeited all claim to them, he assigned them to his own tribe of Judah (Sa1 27:6).
Adam Clarke on 1 Chronicles 4:31
These were their cities unto the reign of David - It appears that David took some of the cities of the Simeonites, and added them to Judah; Ziklag for instance, Sa1 27:6.
As the tribe of Simeon had withdrawn their allegiance from the house of David, the kings of Judah extended their domination as far as possible into the territories of that tribe, so that they were obliged to seek pasture for their flocks at Gedor, and in the mountains of Seir, as we find Ch1 4:39-42.
John Gill on 1 Chronicles 4:34
And Meshobab, and Jamlech,.... These, with those that follow to the end of 1 Chronicles 4:37 were famous men in the tribe of Simeon, of rank and dignity, and eminent for courage and valour, as the latter part of the chapter testifies, though they are nowhere else taken notice of. Jamlech, as Fabritius (k) observes, is not very different from Jamblichus, the name of a famous Platonic philosopher.
(k) Bibliothec. Gr. l. 4. c. 28. p. 294.