Read this passage and open each verse for the full verse feed and commentary tools.
Garments for the Priesthood
37And you shall put it on a blue cord, that it may be on the turban; it shall be on the front of the turban. 38So it shall be on Aaron’s forehead, that Aaron may bear the iniquity of the holy things which the children of Israel hallow in all their holy gifts; and it shall always be on his forehead, that they may be accepted before the Lord.
Exodus 28:36-38 (NKJV)