Ten cubits shall be the length of a board, and a cubit and a half shall be the breadth of one board.
A description of the construction of the tabernacle.
King James Version (public domain)
Traditionally attributed to Moses · c. 13th century BC · The Pentateuch — Genesis, Exodus, Leviticus, Numbers, and Deuteronomy — is traditionally attributed to him
14And thou shalt make a covering for the tent of rams’ skins dyed red, and a covering above of badgers’ skins.
15And thou shalt make boards for the tabernacle of shittim wood standing up.
16Ten cubits shall be the length of a board, and a cubit and a half shall be the breadth of one board.
17Two tenons shall there be in one board, set in order one against another: thus shalt thou make for all the boards of the tabernacle.
18And thou shalt make the boards for the tabernacle, twenty boards on the south side southward.