Breastplate: Inseparably United to the Ephod
Source: TTT
Exodus 28:22–28
For the breastpiece, make braided chains like cords of pure gold. / You are also to make two gold rings and fasten them to the two corners of the breastpiece. / Then fasten the two gold chains to the two gold rings at the corners of the breastpiece,
Exodus 39:15–21
For the breastpiece they made braided chains like cords of pure gold. / They also made two gold filigree settings and two gold rings, and fastened the two rings to the two corners of the breastpiece. / Then they fastened the two gold chains to the two gold rings at the corners of the breastpiece,