Keil & Delitzsch , Commentary on the Old Testament, , , Ps 84:7, עמק הבּכא does not signify the "Valley of weeping," as Hupfeld at last renders it (lxx κοιλάδα τοῦ κλαυθμῶνος), although Burckhardt found a [Arab.] wâdî 'l-bk' (Valley of weeping) in the neighbourhood of Sinai. In Hebrew "weeping" is בּכי, בּכה, בּכוּת, not בּכא, Rénan, in the fourth chapter of his Vie de Jésus, understands the expression to mean the last station of those who journey from northern Palestine on this side of the Jordan towards Jerusalem, viz., Ain el-Haramîje, in a narrow and gloomy valley where a black stream of water flows out of the rocks in which graves are dug, so that consequently עמק הככא signifies Valley of tears or of trickling waters. But such trickling out of the rock is also called בּכי, Job 28:11, and not בּכא. This latter is the singular to בּכאים in 2Sam 5:24 (cf. נכאים, צבאים, Psa 103:21), the name of a tree, and, according to the old Jewish lexicographers, of the mulberry-tree (Talmudic תּוּת, Arab. tût); but according to the designation, of a tree from which some kind of fluid flows, and such a tree is the Arab. baka'un, resembling the balsam-tree, which is very common in the arid valley of Mecca, and therefore might also have given its name to some arid valley of the Holy Land (vid., Winer's Realwörterbuch, s.v. Bacha), and, according to 2Sam 5:22-25, to one belonging, as it would appear, to the line of valley which leads from the coasts of the Philistines to Jerusalem.