Exodus 28:37-39

New Catholic Bible

³⁷ Attach it with a blue cord to the front part of the turban. ³⁸ It will be on Aaron’s forehead, so that Aaron may carry the weight of whatever guilt the children of Israel may incur in the holy things, when they consecrate their holy offerings. He will always wear it on his forehead so that they may be pleasing to the Lord.

³⁹ “Weave the checkered tunic of fine linen and make a turban of fine linen and a sash embroidered with needlework.