Boyd’s Bible Dictionary:
(oath). (1) Son of Bichri, a Benjamite, who revolted from David and was beheaded (2 Sam. 20:1-22). (2) A Gadite chief (1 Chron. 5:13). (3) A descendant of Ham (Gen. 10:7; 1 Chron. 1:9). (4) Son of Joktan (Gen. 10:28). (5) Son of Jokshan (Gen. 25:3; 1 Chron. 1:32). (6) The kingdom of Sheba, whose queen visited Solomon (1 Kings 10:1-13; 2 Chron. 9:1-12). This country has been variously located in Africa, in Arabia, on the Persian Gulf, and in Arabia, on the Red Sea. The burden of authority identifies it with Yemen or Arabia Felix, on the Red Sea, and peopled by descendants of Sheba, son of Joktan. (7) A town in Simeon (Josh. 19:2). Probably the Shema of Joshua 15:26.
Concise Bible Dictionary:
1. Son of Raamah, a son of Cush (Gen. 10:7; 1 Chron. 1:9). His descendants are generally held to have settled on the shores of the Persian Gulf.
2. Son of Joktan, a descendant of Shem (Gen. 10:28; 1 Chron. 1:22). His descendants have been traced to Southern Arabia, or Arabia Felix. The metropolis of the district was at or near the modern Mareb, about 15° 45' N, 45° 35' E.
3. Son of Jokshan, a son of Abraham and Keturah (Gen. 25:3; 1 Chron. 1:32). Some judge his descendants to have settled “far north;” others place them “somewhere in Arabia.” (The name “Sheba” occurs also in Job 6:19; Psalm 72:10, 15; Isaiah 60:6; Jeremiah 6:20; Ezekiel 27:22-23 and Ezekiel 38:13; but it is uncertain to which of the above three races each passage refers.)
4. The country from whence the queen came who visited Solomon. She brought gold, precious stones, and a great store of spices. The Lord spoke of her as “the queen of the south” (1 Kings 10:1-13; 2 Chron. 9:1,3,9,12; Matt. 12:42; Luke 11:31). The “south” well agrees with the locality of the descendants of Sheba, the son of Joktan.
Jackson’s Dictionary of Scripture Proper Names:
he who is coming: seven: oath