出埃及记 39:21

And they did bind the breastplate by the rings thereof unto the rings of the ephod with a lace of blue, that it might be upon the skilfully woven band of the ephod, and that the breastplate might not be loosed from the ephod; as Jehovah commanded Moses.

and they bind the breastplate by its rings unto the rings of the ephod, with a ribbon of blue, to be above the girdle of the ephod, and the breastplate is not loosed from off the ephod, as Jehovah hath commanded Moses.

And the rings on the bag were fixed to the rings of the ephod by a blue cord, keeping it in place over the band, so that the bag might not get loose, as the Lord gave orders to Moses.