Fausset's Bible Dictionary
1. A town of Moab, taken possession of by Reuben. Also the Mount of Moab, from which Moses viewed Canaan (Deuteronomy 32:49; Deuteronomy 34:1). Pisgah was a ridge of the Abarim mountains, W. from Heshbon. Nebo was a part of Pisgah named from the town, NEBO close by. Isaiah 15:2, "Moab shall howl 'at' (al ) Nebo." (Jeremiah 48:1; Numbers 32:3; Numbers 32:38; Numbers 33:47). As Israel's encampment was "before Nebo," i.e. to the E. of Nebo, probably Nebo was on Pisgah's western slope. The peakless, horizontal straightness of the ridge caused the parts to be distinguished only by the names of adjoining villages. As Nebo "faced Jericho," and "the ravine of Moses' burying place in Moab faced Beth-Peor," Attarus suggested by Seetzen is too far S., and jebel el Jilad too far N. to correspond. Grove suggests jebel Nebbah, S. of wady Hesban.
2. "The other (town) NEBO" was W. of Jordan, in Benjamin (Ezra 2:29; Ezra 10:43; Nehemiah 7:33). Perhaps Beit Nubah.
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Fausset, Andrew R. Entry for 'Nebo (1)'. Fausset's Bible Dictionary. https://www.studylight.org/dictionaries/eng/fbd/n/nebo-1.html. 1949.