Exodus 39:29-31

Amplified Bible

²⁹ and the sash of fine twisted linen, and blue, purple, and scarlet fabric, the work of an embroiderer, just as the Lord commanded Moses.

³⁰ They made the plate of the holy crown of pure gold, and wrote on it an inscription, like the engravings of a signet, “Holy to the Lord.”^{(A) 31} They tied a blue cord to it, to fasten it on the turban above, just as the Lord commanded Moses.