Exodus 28:35-37

35It shall be on Aaron 1when he ministers; and 2its tinkling shall be heard when he enters and 3leaves the holy place before the Lord, so that he will not die.

36“You shall also make 4a plate of pure gold and shall engrave on it, like the engravings of a seal, ‘5Holy to the Lord.’ 37You shall 6fasten it on a 7blue cord, and it shall be on the turban; it shall be at the front of the turban.