Exodus 28:37-39

Living Bible

^37-38 This plate is to be attached by means of a blue ribbon to the front of Aaron’s turban. In this way Aaron will be wearing it upon his forehead, and thus bear the guilt connected with any errors regarding the offerings of the people of Israel. It shall always be worn when he goes into the presence of the Lord, so that the people will be accepted and forgiven.

³⁹ “Weave Aaron’s embroidered shirt from fine-twined linen, using a checkerboard pattern; make the turban, too, of this linen; and make him an embroidered sash.