Exodus 39:17

Catholic Public Domain Version

from which two golden chains would hang, which they connected with the hooks that projected from the corners of the ephod.

See the chapter Copy

and two little chains of the purest gold, linked to one another, which you shall insert into the hooks.

and two hooks, and the same number of gold rings. Moreover, they set the rings at both sides of the breastplate,

These were both in front and in back so that they met one another, and so that the ephod and the breastplate were woven together,