The Ephod for the High Priest: Breastplate of Judgment Inseparably United To

…and fasten the other ends of the two chains to the two filigree settings, attaching them to the shoulder pieces of the ephod at the front. …

They made two additional gold rings and attached them to the bottom of the two shoulder pieces of the ephod, on its front, near the seam just above its woven waistband.

Then they tied the rings of the breastpiece to the rings of the ephod with a cord of blue yarn, so that the breastpiece was above the waistband of the ephod and would not swing out from the ephod, just as the LORD had commanded Moses.