Exodus 39:29-31 Modern English Version (MEV)
29 The sash was of fine twisted linen and blue, purple, and scarlet, 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:
HOLINESS TO THE LORD.
31 They attached to it a blue cord, to fasten it to the turban above, just as the Lord commanded Moses.