Exodus 27:6-8

Revised Standard Version

⁶ And you shall make poles for the altar, poles of acacia wood, and overlay them with bronze; ⁷ and the poles shall be put through the rings, so that the poles shall be upon the two sides of the altar, when it is carried. ⁸ You shall make it hollow, with boards; as it has been shown you on the mountain, so shall it be made.