Exodus 39:2
They made the ephod of gold, and of blue, purple and scarlet yarn, and of finely twisted linen. The ephod — the most distinctive garment of the high priest — is constructed exactly as Exodus 28:6–8 specified. Gold, blue, purple, scarlet, and fine linen: the five covenant materials woven into the garment that will carry the names of the twelve tribes on its shoulder stones. The craftsmen who built the sanctuary now clothe the priest who will serve in it. The continuity of material between the sanctuary and the vestment is the continuity of the priestly identity with the priestly service.