2. Mose 26:15

The wooden framework. - Exo 26:15, Exo 26:16. The boards for the dwelling were to be made "of acacia-wood standing," i.e., so that they could stand upright; each ten cubits long and one and a half broad. The thickness is not given; and if, on the one hand, we are not to imagine them too thin, as Josephus does, for example, who says they were only four fingers thick (Ant. iii. 6, 3), we have still less reason for following Rashi, Lund, Bhr and others, who suppose them to have been a cubit in thickness, thus making simple boards into colossal blocks, such as could neither have been cut from acacia-trees, nor carried upon desert roads. (Note: Kamphausen (Stud. und Krit. 1859, p. 117) appeals to Bhr's Symbolik 1, p. 261-2, and Knobel, Exod. p. 261, in support of the opinion, that at any rate formerly there were genuine acacias of such size and strength, that beams could have been cut from them a cubit and a half broad and a cubit thick; but we look in vain to either of these writings for such authority as will establish this fact. Expressions like those of Jerome and Hasselquist, viz., grandes arbores and arbos ingens ramosissima, are far too indefinite. It is true that, according to Abdullatif, the Sont is "a very large tree," but he gives a quotation from Dinuri, in which it is merely spoken of as "a tree of the size of a nut-tree." See the passages cited in Rosenmller's bibl. Althk. iv. 1, p. 278, Not. 7, where we find the following remark of Wesling on Prosper. Alpin. de plantis Aeg.: Caudicem non raro ampliorem deprehendi, quam ut brachio meo circumdari possit. Even the statement of Theophrast (hist. plant. 4, 3), to the effect that rafters are cut from these trees 12 cubits long (δωδεκάπηχυς ἐρέψιμος ὕλη), is no proof that they were beams a cubit and a half broad…

Very particular directions are here given about the boards of the tabernacle, which were to bear up the curtains, as the stakes of a tent which had need to be strong, Isa 54:2. These boards had tenons which fell into the mortises that were made for them in silver bases. God took care to have every thing strong, as well as fine, in his tabernacle. Curtains without boards would have been shaken by every wind; but it is a good thing to have the heart established with grace, which is as the boards to support the curtains of profession, which otherwise will not hold out long. The boards were coupled together with gold rings at top and bottom (Exo 26:24), and kept firm with bars that ran through golden staples in every board (Exo 26:26), and the boards and bars were all richly gilded, Exo 26:29. Thus every thing in the tabernacle was very splendid, agreeable to that infant state of the church, when such things were proper enough to please children, to possess the minds of the worshippers with a reverence of the divine glory, and to affect them with the greatness of that prince who said, Here will I dwell; in allusion to this the new Jerusalem is said to be of pure gold, Rev 21:18. But the builders of the gospel church said, Silver and gold have we none; and yet the glory of their building far exceeded that of the tabernacle, Co2 3:10, Co2 3:11. How much better is wisdom than gold! No orders are given here about the floor of the tabernacle; probably that also was boarded; for we cannot think that within all these fine curtains they trod upon the cold or wet ground; if it was so left, it may remind us of Exo 20:24, An altar of earth shalt thou make unto me.

26:15 acacia wood: A hard wood found in the region of Sinai.