And you shall make the boards for the tabernacle, twenty boards for the south side.
Exodus 26:18
Surrounding context
26:17 Two tenons shall be in each board for binding one to another. Thus you shall make for all the boards of the tabernacle.
26:18 And you shall make the boards for the tabernacle, twenty boards for the south side.
26:19 You shall make forty sockets of silver under the twenty boards: two sockets under each of the boards for its two tenons.