Exodus 26:21 in the World English Bible
and their forty sockets of silver; two sockets under one board, and two sockets under another board.
Context
20 And for the second side of the tabernacle on the north side there shall be twenty boards:
21 And their forty sockets of silver; two sockets under one board, and two sockets under another board.
22 And for the sides of the tabernacle westward thou shalt make six boards.