Exodus 28:28 They shall bind the breastplate by its rings to the rings of the ephod with a lace of blue, that it may be on the skillfully woven band of the ephod, and that the breastplate may not swing out from the ephod. (See NIV)
Exodus 36:17 And he made fifty loops on the edge of the curtain that was outmost in the first set, and fifty loops made he upon the edge of the curtain which was outmost in the second set. (See RSV)
Exodus 39:21 They bound the breastplate by its rings to the rings of the ephod with a lace of blue, that it might be on the skillfully woven band of the ephod, and that the breastplate might not come loose from the ephod, as Yahweh commanded Moses. (See NIV)