Exodus 28:36-38 - The Turban
36 And thou shalt make a burnished plate, of pure gold, - and shalt engrave thereupon, like the engravings of a seal-ring, Holiness to Yahweh.
37 And thou shalt put it upon a cord of blue, so shall it be upon the turban, - upon the forefront of the turban, shall it be. 38 So shall it be upon the forehead of Aaron, and Aaron shall bear the iniquity of the hallowed things, which the sons of Israel shall hallow, for all their hallowed gift, - and it shall be upon his forehead continually, that there may be acceptance for them before Yahweh.