18 and the other ends of the chains to the two settings, attaching them to the shoulder pieces of the ephod at the front.

Read Exodus 39:18 Using Other Translations

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.
They attached the two ends of the two cords to the two settings of filigree. Thus they attached it in front to the shoulder pieces of the ephod.
They tied the other ends of the cords to the gold settings on the shoulder-pieces of the ephod.