Exodus 26:15 says, And thou shalt make boards for the tabernacle of shittim wood standing up.  These next few verse give the specifications for the boards of the tabernacle.  Verse sixteen states, Ten cubits shall be the length of a board, and a cubit and a half shall be the breadth of one board.  Verse seventeen adds, Two tenons shall there be in one board, set in order one against another: thus shalt thou make for all the boards of the tabernacle.  Verse eighteen continues, And thou shalt make the boards for the tabernacle, twenty boards on the south side southward.  This was not to be a small tabernacle, yet it was still designed to be mobile.  Verse nineteen says, And thou shalt make forty sockets of silver under the twenty boards; two sockets under one board for his two tenons, and two sockets under another board for his two tenons.  Verse twenty states, And for the second side of the tabernacle on the north side there shall be twenty boards:  Verse twenty-one adds, And their forty sockets of silver; two sockets under one board, and two sockets under another board.  Verse twenty-two continues, And for the sides of the tabernacle westward thou shalt make six boards.  The tabernacle was to be rectangular in shape, with the north and south sides being longer.  Verse twenty-three says, And two boards shalt thou make for the corners of the tabernacle in the two sides.  Verse twenty-four states, And they shall be coupled together beneath, and they shall be coupled together above the head of it unto one ring: thus shall it be for them both; they shall be for the two corners.  Verse twenty-five adds, And they shall be eight boards, and their sockets of silver, sixteen sockets; two sockets under one board, and two sockets under another board. Then verse twenty-six continues, And thou shalt make bars of shittim wood; five for the boards of the one side of the tabernacle,  I believe the main thing that we can learn from this is that God has specific instructions for those who follow Him, and He expects us to obey His instructions.  Verse twenty seven says, And five bars for the boards of the other side of the tabernacle, and five bars for the boards of the side of the tabernacle, for the two sides westward.  Verse twenty-eight states, And the middle bar in the midst of the boards shall reach from end to end.  Verse twenty-nine continues, And thou shalt overlay the boards with gold, and make their rings of gold for places for the bars: and thou shalt overlay the bars with gold.  Verse thirty concludes,And thou shalt rear up the tabernacle according to the fashion thereof which was shewed thee in the mount.  We today as followers of Christ do not have a tabernacle made by hands, but a tabernacle made by faith in Him.  The Holy Spirit indwells us, and we become a living tabernacle of God.