Exodus 26:26-28

Amplified Bible

²⁶ “Then you shall make [fifteen] bars of acacia wood: five for the boards of one side of the tabernacle, ²⁷ and five bars for the boards of the other side of the tabernacle, and five bars for the boards of the rear end of the tabernacle, for the back wall toward the west. ²⁸ And the middle bar in the center of the boards shall pass through [horizontally] from end to end.