Boyd’s Bible Dictionary:
(1) Descendants of Sheba, son of Joktan (Joel 3:8). (2) Evidently the descendants of Seba, son of Cush (Isa. 45:14). (3) Perhaps a third tribe, though it may be one of the two just mentioned. (4) A wrong translation (Ezek. 23:42, “drunkards,” in margin.).
Concise Bible Dictionary:
There are four persons who have been regarded as progenitors of the Sabeans.
1. Seba, son of Cush (Gen. 10:7).
2. Sheba, grandson of Cush (Gen. 10:7).
3. Sheba, descendant of Joktan (Gen. 10:28).
4. Sheba, son of Jokshan (Gen. 25:3).
The first two are descendants of Ham, and the last two descendants of Shem. For their localities see SEBA and SHEBA. Some were marauders who swept away the oxen and asses of Job (Job 1:15). In Isaiah 45:14 they were traveling merchants. In Joel 3:8 they are represented as a people “far off,” to whom Judah will sell their enemies. These passages may not all refer to the same people. In Ezekiel 23:42 The chethib reads “drunkards,” as in the margin of the AV and the text of the RV.
Jackson’s Dictionary of Scripture Proper Names:
: they who come: go about (busybodies?) (Joel 3:8) : he who is coming (Job 1:15)