Ellicott's Commentary for English Readers - Exodus 26:26
(26) Bars of shittim wood.—The object of the “bars” was to hold the “boards” together, and prevent there being any aperture between one board and another. They were fifteen in number, five for each of the three sides of the boarded space. The “middle bar” on each side was to extend from end to end of the tabernacle (Exodus 26:28), the four bars above and below being shorter, each coupling together probably one-half of the boards of its side. The bars were passed through “rings” attached to the... read more
Ellicott's Commentary for English Readers - Exodus 26:25
(25) Sixteen sockets.—Two for each corner board, and twelve for the six boards between them. read more