Melachim Alef 6:17-19

Orthodox Jewish Bible

¹⁷ And the Beis, that is, the Heikhal in front of it, was forty cubits long.

¹⁸ And the cedar of the Beis [Hamikdash] within was carved with gourds and open flowers; all was cedar; there was no stone seen.

¹⁹ And the Devir he prepared in the Beis [Hamikdash] within, to set there the Aron Brit Hashem.