So they went up, and searched the land from the wilderness of Zin unto Rehob, as men come to Hamath. From the wilderness of Zin - The place called; צן Tsin, here, is different from that called סין Sin or Seen. Exodus 16:1; the latter was nigh to Egypt, but the former was near Kadesh Barnea, not far from the borders of the promised land.
"The spies having left Kadesh Barnea, which was in the desert of Paran, see Numbers 13:26, they proceeded to the desert of Tsin, all along the land of Canaan, nearly following the course of the river Jordan, till they came to Rehob, a city situated near Mount Libanus, at the northern extremity of the Holy Land, towards the road that leads to Hamath. Thence they returned through the midst of the same land by the borders of the Sidonians and Philistines, and passing by Mount Hebron, rendered famous by the residence of Abraham formerly, and by the gigantic descendants of Anak at that time, they passed through the valley of the brook of Eshcol, where they cut down the bunch of grapes mentioned Numbers 13:23, and returned to the Israelitish camp after an absence of forty days," Numbers 13:25. See Calmet on this place.