Exodus 39:20-22

New Century Version

²⁰ They made two more gold rings on the bottom of the shoulder straps in front of the holy vest, near the seam, just above the woven belt of the holy vest. ²¹ They used a blue ribbon and tied the rings of the chest covering to the rings of the holy vest, connecting it to the woven belt. In this way the chest covering would not swing out from the holy vest. They did all these things the way the Lord commanded.

²² Then they made the outer robe to be worn under the holy vest. It was woven only of blue cloth.