Exodus 28:7
28:7 It is to have two shoulder pieces attached to two of its corners, so it can be joined together.
Exodus 28:12
28:12 You are to put the two stones on the shoulders of the ephod, stones of memorial for the sons of Israel, and Aaron will bear their names before the Lord on his two shoulders for a memorial.
Exodus 28:25
28:25 the other two ends of the two chains you will attach to the two settings and then attach them to the shoulder pieces of the ephod at the front of it.