The name used by the source E and in Deut. (e.g. 5: 2) for Mount Sinai. It is uncertain whether Sinai and Horeb referred to different areas in the same location, were completely different places, or were alternative names for the same place.
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"Horeb." In A Dictionary of the Bible. Ed. W. R. F. Browning. Oxford Biblical Studies Online. Nov 30, 2015. <http://www.oxfordbiblicalcstudies.com/article/opr/t94/e897>.
"Horeb." In A Dictionary of the Bible. , edited by W. R. F. Browning. Oxford Biblical Studies Online, http://www.oxfordbiblicalcstudies.com/article/opr/t94/e897 (accessed Nov 30, 2015).