John Gills Exposition of the Bible Commentary - Genesis 25:14
And Mishma, and Dumah, and Massa. Of Mishma and Massa, and of their posterity, there is not anything said elsewhere, unless the Masani, Ptolemy F16 Georaph. l. 16. p. 528. 534. 536. places near Arabia Felix, came from Massa. Dumah seems to be the same Isaiah speaks of in Genesis 21:11 ; and in Arabia Deserta, where some of Ishmael's posterity settled, is a place called Dumaetha, by Ptolemy F17 lbid. , which perhaps had its name from this son of his. The Targum of Jonathan... read more
Matthew Henry's Complete Commentary - Genesis 25:11-18
Immediately after the account of Abraham's death, Moses begins the story of Isaac (Gen. 25:11), and tells us where he dwelt and how remarkably God blessed him. Note, The blessing of Abraham did not die with him, but survived to all the children of the promise. But he presently digresses from the story of Isaac, to give a short account of Ishmael, forasmuch as he also was a son of Abraham, and God had made some promises concerning him, which it was requisite we should know the accomplishment... read more