Exodus 28:31

The Robe

³⁰ Place the Urim and Thummim in the breastpiece for decisions, so that they will also be over Aaron’s heart whenever he comes before the Lord. Aaron will continually carry the means of decisions for the Israelites over his heart before the Lord. ³¹ “You are to make the robe of the ephod entirely of blue yarn. ³² There should be an opening at its top in the center of it. Around the opening, there should be a woven collar with an opening like that of body armor so that it does not tear.

Jacinth

Exodus 28:4

These are the garments that they must make: a breastpiece, an ephod, a robe, a specially woven tunic, a turban, and a sash. They are to make holy garments for your brother Aaron and his sons so that they may serve Me as priests.

Exodus 28:28

The craftsmen are to tie the breastpiece from its rings to the rings of the ephod with a cord of blue yarn, so that the breastpiece is above the ephod’s waistband and does not come loose from the ephod.

Exodus 39:22-26

They made the woven robe of the ephod entirely of blue yarn.

Leviticus 8:7

He put the tunic on Aaron, wrapped the sash around him, clothed him with the robe, and put the ephod on him. He put the woven band of the ephod around him and fastened it to him.