The Bible
Exodus 27
The tabernacle is to contain an altar for burnt offerings and a court surrounded by pillars—A light is to burn always in the tabernacle of the congregation.
6And thou shalt make staves for the altar, staves of shittim wood, and overlay them with brass.
8Hollow with boards shalt thou make it: as it was shewed thee in the mount, so shall they make it.
13And the breadth of the court on the east side eastward shall be fifty cubits.