Achor
A valley on the northern border of Judah whose name in the UPDV is fixed at its first scriptural naming as the place where Achan and his household were stoned and burned after the devoted-thing crisis at Jericho. Three later passages carry the trouble-named valley forward: a tribal-allotment border-waypoint in Joshua's land-division, a herd-fold reversal in Isaiah's renewed-creation oracle, and a door-of-hope reassignment in Hosea's wilderness-allurement oracle.
The Trouble Valley and the Naming
The valley receives its name in the closing scene of the Achan episode at Jericho. Joshua and all Israel bring Achan, his family, his livestock, his tent, and the stolen devoted things "to the valley of Achor" (Jos 7:24). Joshua confronts him there: "Why have you troubled us? Yahweh will trouble you this day. And all Israel stoned him with stones; and they burned them with fire, and heaped stones upon them" (Jos 7:25). The naming follows directly from the stone-heap-and-wrath-turning at v26: "they raised over him a great heap of stones, to this day; and Yahweh turned from the fierceness of his anger. Therefore the name of that place was called, The valley of Achor, to this day" (Jos 7:26). The therefore-clause ties the place-name to the paired act — the great heap raised over the offender and Yahweh's anger turning off — so the valley is fixed at origin as the trouble-valley whose name memorializes how the devoted-thing crisis was closed.
A Border Waypoint of Judah
In the tribal allotment of Judah, the formerly trouble-named valley is carried over as a geographic fix on the northern boundary line: "and the border went up to Debir from the valley of Achor, and so northward, looking toward Gilgal, that is across from the ascent of Adummim, which is on the south side of the river; and the border passed along to the waters of En-shemesh, and the goings out of it were at En-rogel" (Jos 15:7). The valley's earlier history is not retold at this point; its name simply functions as a known landmark running the line from Debir toward Gilgal and the ascent of Adummim.
The Herd-Fold Reversal
In Isaiah's oracle of the renewed land for the seeking-people, the trouble-valley is reassigned to pastoral use and paired with Sharon: "And Sharon will be a fold of flocks, and the valley of Achor a place for herds to lie down in, for my people who have sought me" (Isa 65:10). The beneficiary-clause "for my people who have sought me" fixes the reversal to the seeking-people, and the valley whose Joshua-era name memorializes Achan's trouble is here exhibited as quiet ground where herds lie down.
A Door of Hope
In Hosea's wilderness-allurement oracle, the same valley is reassigned again — this time as the entry-point at which the addressed-bride answers Yahweh: "And I will give her her vineyards from there, and the valley of Achor for a door of hope; and she will answer [my Speech] there, as in the days of her youth, and as in the day when she came up out of the land of Egypt" (Hos 2:15). The middle-clause "and the valley of Achor for a door of hope" sits between the give-her-her-vineyards-from-there opening-restoration and the she-will-answer-[my-Speech]-there closing-response, so the formerly trouble-named valley is exhibited as the very entry-point of the youth-and-Egypt-departure-style answering.