The sons of Simeon - This genealogy is very different from that given in Genesis 46:10, and Numbers 26:12. This may be occasioned by the same person having several names, one list taking one name, another list some other, and so on: to reconcile is impossible; to attempt it, useless.

The sons of Simeon [were], Nemuel, and Jamin, Jarib, Zerah, [and] (h) Shaul:
(h) His son Obed is omitted here.

The sons of Simeon,.... The account of whom, next to the tribe of Judah, is given before Reuben, because its inheritance lay in the tribe of Judah, Joshua 19:1 his sons were Nemuel, the same with Jemuel, Genesis 46:10.
and Jamin, Jarib, Zerah, and Shaul; who, in the place referred to, is said to be the son of a Canaanitish woman; and Jarib and Zerah are the same with Jachin and Zohar there: and Obed is here omitted, it may be because he died without issue; see Numbers 26:12.

OF SIMEON. (1Ch. 4:24-43)
The sons of Simeon--They are classed along with those of Judah, as their possession was partly taken out of the extensive territory of the latter (Joshua 19:1). The difference in several particulars of the genealogy given here from that given in other passages is occasioned by some of the persons mentioned having more than one name [compare Genesis 46:10; Exodus 6:15; Numbers 26:12].

The families of Simeon. - Of the six sons of Simeon, Genesis 46:10 and Exodus 6:15, only the five are here named who, according to Numbers 26:12-14, founded the families of this tribe. The third son, Ohad, is omitted even in Numbers 26:12 in the list of the families of Simeon, at the numbering of the people in the fortieth year of the journey through the wilderness, clearly only because the posterity of Ohad had either died out, or had so dwindled away that it could form no independent family. The names of the five sons agree with the names in Numbers 26:12-14, except in the case of Jarib, who in Numbers 26:12, which coincides here with Genesis 46:10 and Exodus 6:15, is called Jachin; יריב, consequently, must be looked upon as a transcriber's error for יכין. Nemuel and Zerah (זרח, the rising of the sun) are called in Genesis and Exodus Jemuel (a different form of the same name) and Zohar (צחר, i.e., candor), another name of similar meaning, which, at first used only as a by-name, afterwards supplanted the original name.