Exodus 26:28

26“You shall make bars of acacia wood: five for the boards of the one side of the tabernacle,

27and 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 far side westward.

28The middle bar in the middle of the boards shall pass through from end to end.

29You shall overlay the boards with gold, and make their rings of gold for places for the bars. You shall overlay the bars with gold.

30You shall set up the tabernacle according to the way that it was shown to you on the mountain.