Verses with the word shoulderpieces in the Old Testament (4 verses):

Exodus 28:7
It shall have the two shoulderpieces thereof joined at the two edges thereof; and so it shall be joined together.

Exodus 28:25
And the other two ends of the two wreathen chains thou shalt fasten in the two ouches, and put them on the shoulderpieces of the ephod before it.

Exodus 39:4
They made shoulderpieces for it, to couple it together: by the two edges was it coupled together.

Exodus 39:18
And the two ends of the two wreathen chains they fastened in the two ouches, and put them on the shoulderpieces of the ephod, before it.