Kedar … Nebaioth. Arab tribes, like the Midianites and Sabaeans. (With respect to Kedar, see the comment on Isaiah 21:15.) "Nebaioth" stands for the tribe called by the Greeks and Romans the "Nabataeans," and by the Assyrians the "Nabaiti," who were one of the most powerful in the peninsula.
About me. 645 Nathan, their king, warred with Asshur-bani-pal. During the Maccabee period we find the Nabataeans in alliance with the Jews, and giving them some valuable assistance (l Macc. 5:25; 9:35).
The locality of the Nabataeans was northern Arabia, or the tract lying between the Elanitic Gulf and the Lower Euphrates. The wealth of the Nabataeans and the Kedarenes was in their flocks and herds; and this wealth, it is prophesied, they will place, at the disposal of Israel.
Mine altar … the house of my glory. The renovated Zion contains a glorious temple, and the temple has in it an altar, to which the sheep and rams are brought—not, however, to be offered in sacrifice, but to be presented to God and become a part of the wealth of the Church.