Exodus 26:17

Every board is to be joined to the one nearest to it by two tongues, and so for every board in the House.

Exodus 26:19

With forty silver bases under the twenty boards, two bases under every board to take its tongues.

Exodus 36:22

Every board had two tongues fixed into it; all the boards were made in this way.

Exodus 36:24

And for these twenty boards, forty silver bases, two bases under every board, to take its tongues.

Treasury of Scripture Knowledge

Summary

Two tenons shall there be in one board, set in order one against another: thus shalt thou make for all the boards of the tabernacle.

Bible References

Tenons

Exodus 26:19
With forty silver bases under the twenty boards, two bases under every board to take its tongues.
Exodus 36:22
Every board had two tongues fixed into it; all the boards were made in this way.

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain