Exodus 39:16–21

Exodus 39:16 — Two settings and two rings: The Hebrew word for "settings" (mishbetzot) denotes intricately worked gold mounts or filigree encasements, used to anchor the braided chains. The doubling — two settings, two rings — mirrors the symmetry of the entire priestly vestment system. In sacred art and architecture, such deliberate symmetry communicates divine order rather than aesthetic preference. These settings were placed at the upper corners of the breastplate, forming the topmost attachment points.

Exodus 39:17 — Braided chains in the rings: The two gold chains (sharshot), already mentioned in verse 14's description of their making, are here inserted into the rings. The term "braided" (avot) conveys a twisted, rope-like construction — strength achieved through interlocking strands. Gold, the noblest metal, is worked into a form that combines beauty and tensile durability. Nothing about the high priest's vestments was accidental; even the texture of the fasteners proclaimed something about the God they served.

Exodus 39:18 — Chains attached to the shoulder straps: The opposite ends of the chains are fixed to the two shoulder settings of the ephod (described in Exodus 28:9–12), which themselves bore the onyx stones engraved with the names of Israel's tribes. This creates a golden bridge across the priest's chest connecting the breastplate below to the shoulder pieces above: the heart joined to the shoulders, love joined to strength.

Exodus 39:19 — Lower rings on the inner edge: Two additional rings are placed at the lower corners of the breastplate, on its inner edge — the edge facing the body, turned toward the ephod. The phrase "toward the side of the ephod inward" is deliberately intimate. These rings face inward, toward the priest himself, emphasizing that the bond between breastplate and ephod is not external and decorative but structural and concealed — a hidden union.

Exodus 39:20 — Corresponding rings on the ephod's shoulder straps: Two matching rings are set on the lower front portion of the ephod's shoulder straps, just above the woven band (the heshev) that girded the ephod to the priest's body. This creates a lower set of anchor points, so the breastplate is secured at both its top corners (by gold chains to the shoulder pieces) and its bottom corners (by a lace of blue to the ephod's lower rings). Four points of attachment — a completeness and stability deliberately engineered.

Exodus 39:21 — The lace of blue: The final fastening is a cord of blue (tekhelet), the same sacred color used throughout the tabernacle curtains, the high priest's robe hem, and the tassels of Israel's garments (Numbers 15:38). Blue in the ancient Levantine world signified the heavenly realm. That this final binding is blue rather than gold suggests that the ultimate bond securing the breastplate — bearing Israel's names over the priest's heart — is of heavenly origin. The verse closes with a formula heard repeatedly in Exodus 39–40: "as Yahweh commanded Moses." This refrain is not mere scribal habit; it signals that every dimension of this fastening — the rings, the chains, the cord, the placement — derived from divine instruction, not human ingenuity.

Typological sense: The binding of breastplate to ephod images the inseparability of intercession and office in the priesthood. The breastplate carried Israel's names before God (Exodus 28:29); the ephod clothed the priest in the authority to stand before the Lord. One without the other is incomplete. The priest does not intercede as a private individual but as one clothed in a God-given office; and the priestly office finds its fulfillment only when it is always oriented toward carrying the people before God. The lace of blue — heavenly, commandment-bound — is what ultimately holds the two together.

Catholic tradition reads the high priest's breastplate and ephod as a type of Christ the eternal High Priest, whose priesthood is treated at length in the Letter to the Hebrews. The breastplate "of judgment" (mishpat) — bearing the names of the twelve tribes over Aaron's heart whenever he entered the sanctuary (Exodus 28:29–30) — prefigures Christ carrying the names of his elect perpetually before the Father in his heavenly intercession (Hebrews 7:25; CCC §1544). The four-point fastening system, with gold chains above and a blue cord below, typifies the thoroughness of Christ's union with his people: he holds them from above by divine power and from below by incarnate solidarity.

St. Cyril of Alexandria, commenting on the Aaronic priesthood, writes that the high priest bore the whole people on his heart and shoulders precisely because a true mediator carries those he represents not merely in office but in love. This finds its antitype in Christ, in whom the roles of priest, victim, and mediator converge perfectly.

The Catechism teaches that "the whole liturgical life of the Church revolves around the Eucharistic sacrifice and the sacraments" (CCC §1113), and that ordained priests act "in persona Christi Capitis" — in the person of Christ the Head (CCC §1548). The bound breastplate foreshadows this sacramental configuration: the ordained minister is not separable from the people he serves, nor from the divine authority that clothes him. The blue lace of heaven-commanded binding echoes what the Catechism calls the indelible character of Holy Orders (CCC §1582), a bond that cannot be undone.

Pope St. John Paul II, in Pastores Dabo Vobis (1992), emphasizes that the priest exists "for" the people in an essential, not accidental, way — a pastoral charity that mirrors precisely what these verses encode in thread and metal.

For Catholic priests and deacons, these verses are a quiet but powerful examination of conscience. The breastplate was engineered never to come loose from the ephod — priestly intercession must never become detached from priestly identity and office. A priest who celebrates Mass or hears confessions perfunctorily, without genuinely carrying his people on his heart, has allowed the breastplate to slip. Conversely, a priest who is emotionally devoted to his community but has drifted from doctrinal fidelity has lost the ephod itself.

For laypeople, the blue cord of heaven-commanded binding speaks to the nature of genuine belonging to the Church. We are not fastened to Christ and his Body by sentiment alone, but by the sacramental bonds of Baptism and Eucharist — bonds that God himself ordained and that are meant to hold at every corner of our lives. When life pulls us away from the Church — through busyness, hurt, or doubt — the remedy is not to manufacture new enthusiasm but to return to the sacramental fastenings God himself designed: Confession, the Eucharist, Scripture, and prayer. These are the rings and chains that hold us bound to the heart of the Mediator.