Exodus 28:12

onyx stones, and setting stones for the ephod and for the breastpiece.

He made the ephod of gold, and of blue and purple and scarlet material, and fine twisted linen.

And he placed them on the shoulder pieces of the ephod, as stones of remembrance for the sons of Israel, just as Yahweh had commanded Moses.

Of Benjamin he said, “May the beloved of Yahweh dwell in security by Him, Who shields him all the day, And he dwells between His shoulders.”

Then Gideon made it into an ephod and placed it in his city, Ophrah, and all Israel played the harlot with it there, so that it became a snare to Gideon and his household.

For the sons of Israel will remain for many days without king or prince, without sacrifice or sacred pillar, and without ephod or household idols.