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Exodus 36:24
He made 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.

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Exodus 26:19
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.

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Exodus 27:10
Its pillars shall be twenty, and their sockets twenty, of bronze. The hooks of the pillars and their fillets shall be of silver.

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