1 Kings 6:15,34
And he built the walls of the house within with boards of cedar, both the floor of the house, and the walls of the ceiling: and he covered them on the inside with wood, and covered the floor of the house with planks of fir.
Nave's Topical Index—AKJV

Songs 1:17
The beams of our house are cedar, and our rafters of fir.
Nave's Topical Index—AKJV