Exodus 28:31

The Robe

³⁰ In the breastpiece of judgment you shall put the Urim (Lights) and the Thummim (Perfections) [to be used for determining God’s will in a matter]. They shall be over Aaron’s heart whenever he goes before the Lord, and Aaron shall always carry the judgment (verdict, judicial decisions) of the sons of Israel over his heart before the Lord. ³¹ “And you shall make the robe of the ephod all of blue. ³² There shall be an opening at its top in the center [for the head], with a binding of woven work around the opening, like the opening in a coat of armor, so that it will not tear or fray.

Jacinth

Exodus 28:4

These are the garments which they shall make: a breastpiece and an ephod [for the breastpiece] and a robe and a tunic of checkered work, a turban, and a sash. They shall make sacred garments for Aaron your brother and his sons, so that he may serve as a priest to Me.

Exodus 28:28

They shall bind the breastpiece by its rings to the rings of the ephod with a blue cord, so that it will be above the skillfully woven sash of the ephod, so that the breastpiece will not come loose from the ephod.

Exodus 39:22-26

Then Bezalel made the robe of the ephod of woven work, all of blue;

Leviticus 8:7

He put the undertunic on Aaron, tied the sash around him, clothed him in the robe, and put the ephod (an upper vestment) on him. He tied the [skillfully woven] band of the ephod around him, with which he secured it to Aaron.