Exodus 28:36-38

New Revised Standard Version, Anglicised

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. ³⁸ It shall be on Aaron’s forehead, and Aaron shall take on himself any guilt incurred in the holy offering that the Israelites consecrate as their sacred donations; it shall always be on his forehead, in order that they may find favour before the Lord.