Exodus 39:20-22

English Standard Version

²⁰ And they made two rings of gold, and attached them in front to the lower part of the two shoulder pieces of the ephod, at its seam above the skillfully woven band of the ephod. ²¹ And they bound the breastpiece by its rings to the rings of the ephod with a lace of blue, so that it should lie on the skillfully woven band of the ephod, and that the breastpiece should not come loose from the ephod, as the Lord had commanded Moses.

^22 (A)He also made the robe of the ephod woven all of blue,