Exodus 28:35-37

New Revised Standard Version, Anglicised

³⁵ Aaron shall wear it when he ministers, and its sound shall be heard when he goes into the holy place before the Lord, and when he comes out, so that he may not die.

³⁶ You shall make a rosette of pure gold, and engrave on it, like the engraving of a signet, ‘Holy to the Lord.’ ³⁷ You shall fasten it on the turban with a blue cord; it shall be on the front of the turban.