Exodus 28:6

And they shall make the shoulder-piece of fine linen spun, the woven work of the embroiderer.

And they shall make the ephod of gold, of blue, and of purple, of scarlet, and fine twined linen, with cunning work.

“They shall make the ephod of gold, blue, purple, scarlet, and fine twined linen, the work of the skillful workman.