Exodus 26:26-30

“You shall make bars of acacia wood, five for the frames of the one side of the tabernacle, and five bars for the frames of the other side of the tabernacle, and five bars for the frames of the side of the tabernacle at the rear westward. The middle bar, halfway up the frames, shall run from end to end. You shall overlay the frames with gold and shall make their rings of gold for holders for the bars, and you shall overlay the bars with gold. Then you shall erect the tabernacle according to the plan for it that you were shown on the mountain.