Exodus 39:21 KJV

19And they made two rings of gold, and put them on the two ends of the breastplate, upon the border of it, which was on the side of the ephod inward.

20And they made two other golden rings, and put them on the two sides of the ephod underneath, toward the forepart of it, over against the other coupling thereof, above the curious girdle of the ephod.

21And they did bind the breastplate by his rings unto the rings of the ephod with a lace of blue, that it might be above the curious girdle of the ephod, and that the breastplate might not be loosed from the ephod; as the LORD commanded Moses.

22And he made the robe of the ephod of woven work, all of blue.

23And there was an hole in the midst of the robe, as the hole of an habergeon, with a band round about the hole, that it should not rend.