And for the rear of the tabernacle westward you shall make six frames.
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.
Commenting on Exodus 26:15-30
And they shall be coupled together beneath,.... At the bottom of the boards or planks: and they shall be coupled together above the head of it unto one ring at the top of the boards there was a ring, to which they were coupled and fastened, and so at the bottom of them, though not expressed: some understand this of all the planks, both at...
Exo 26:22-24 Six boards were to be made for the back of the dwelling westwards (ימּה), and two boards “for the corners or angels of the dwelling at the two outermost (hinder) sides.” למקצּעת (for cornered), from מקצּע, equivalent to מקצוע an angle (Exo 26:24; Eze 46:21-22), from קצע to cut off, lit., a section, something cut off, hence an angle, or corner-piece.
Commenting on Exodus 26:22-24