Exodus 26:19 in the King James Version
And thou shalt make forty sockets of silver under the twenty boards; two sockets under one board for his two tenons, and two sockets under another board for his two tenons.
Context
18 You shall make twenty boards for the tabernacle, for the south side southward.
19 You shall make forty sockets of silver under the twenty boards; two sockets under one board for its two tenons, and two sockets under another board for its two tenons.
20 For the second side of the tabernacle, on the north side, twenty boards,