Exodus 28:28 And they shall bind the breastplate by the rings thereof unto the rings of the ephod with a
lace of blue, that it may be above the curious girdle of the ephod, and that the breastplate be not loosed from the ephod.
Exodus 28:37 And thou shalt put it on a blue
lace, that it may be upon the mitre; upon the forefront of the mitre it shall be.
Exodus 39:21 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.