Exodus 39:21-23

King James Version

²¹ And 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.

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

²³ And 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.