Pine
The pine appears in two Isaian visions of restoration, where it stands beside the fir and the box-tree as one of the choice trees Yahweh transplants — first into the wilderness for his redeemed people, then into the sanctuary precincts at Jerusalem. A third reference, in the Booths-keeping of Nehemiah 8, gathers branches for the festival without naming the pine in the UPDV wording.
Trees in the Wilderness
The first Isaian oracle places the pine in a desert turned forest. Yahweh promises: "I will put in the wilderness the cedar, the acacia, and the myrtle, and the oil-tree; I will set in the desert the fir-tree, the pine, and the box-tree together" (Isa 41:19). The list runs to seven trees, and the pine sits in the second triplet — fir, pine, box — set together in the desert. The image is of an environment unsuited to such growth being made hospitable to it; the catalogue's variety underscores that the planting is not a token but a forest.
Trees in the Sanctuary
The second Isaian oracle reuses the closing triplet of the first — the same fir, pine, and box together — and brings them not into the desert but into the sanctuary at Zion: "The glory of Lebanon will come to you, the fir-tree, the pine, and the box-tree together, to beautify the place of my sanctuary; and I will make the place of my feet glorious" (Isa 60:13). The "glory of Lebanon" supplies the trees, and their function is to beautify the place where Yahweh's feet stand. The pine that was planted in the wilderness for the redeemed in chapter 41 reappears, with its companions, as part of the ornament of the temple in chapter 60.
Branches for Booths
The Nehemiah Booths-keeping proclamation gathers branches from a list of trees: "Go forth to the mount, and fetch olive branches, and branches of wild olive, and myrtle branches, and palm branches, and branches of thick trees, to make booths, as it is written" (Neh 8:15). The UPDV closes the list with "branches of thick trees" rather than singling out pine, so the verse stands here as the festival's ingathering of trees in general — olive, wild olive, myrtle, palm, and the thick-foliaged remainder — for the construction of the booths.