Easton’s Bible Dictionary
Kadesh: holy, or Kadesh-Barnea, sacred desert of wandering, a place on the south-eastern border of Palestine, about 165 miles from Horeb. It lay in the "wilderness" or "desert of Zin" (Genesis 14:7; Numbers 13:3-26; 14:29-33; 20:1; 27:14), on the border of Edom (Numbers 20:16). From this place, in compliance with the desire of the people, Moses sent forth "twelve spies" to spy the land. After examining it in all its districts, the spies brought back an evil report, Joshua and Caleb alone giving a good report of the land (Numbers 13:18-31). Influenced by the discouraging report, the people abandoned all hope of entering into the Promised Land. They remained a considerable time at Kadesh. (See HORMAH, KORAH.) Because of their unbelief, they were condemned by God to wander for thirty-eight years in the wilderness. They took their journey from Kadesh into the deserts of Paran, "by way of the Red Sea" (Deuteronomy 2:1). (One theory is that during these thirty-eight years they remained in and about Kadesh.)
At the end of these years of wanderings, the tribes were a second time gathered together at Kadesh. During their stay here at this time Miriam died and was buried. Here the people murmured for want of water, as their forefathers had done formerly at Rephidim; and Moses, irritated by their chidings, "with his rod smote the rock twice," instead of "speaking to the rock before their eyes," as the Lord had commanded him (comp. Numbers 27:14; Deuteronomy 9:23; Psalm 106:32,33). Because of this act of his, in which Aaron too was involved, neither of them was to be permitted to set foot within the Promised Land (Numbers 20:12,24). The king of Edom would not permit them to pass on through his territory, and therefore they commenced an eastward march, and "came unto Mount Hor" (Numbers 20:22).
This place has been identified with 'Ain el-Kadeis, about 12 miles east-south-east of Beersheba. (See SPIES.)