Exodus 39:20-22

New King James Version

²⁰ They made two other gold rings and put them on the two shoulder straps, underneath the ephod toward its front, right at the seam above the intricately woven band of the ephod. ²¹ And they bound the breastplate by means of its rings to the rings of the ephod with a blue cord, so that it would be above the intricately woven band of the ephod, and that the breastplate would not come loose from the ephod, as the Lord had commanded Moses.

Making the Other Priestly Garments

^22 (A)He made the ^(B)robe of the ephod of woven work, all of blue.