Exodus 28:36 commands engraving 'Holy to the Lord' on a gold plate, another engraving element of the same high priestly garments.

Exodus 28:17 describes the breastplate's twelve stones, another part of the same garment instructions involving precious stones.

Exodus 28:21 commands engraving the twelve tribes' names on breastplate stones, directly parallel to engraving names on the shoulder stones.

Exodus 39:6 describes the actual execution of this command, detailing how the onyx stones were set and engraved with the names.

Exodus 25:7 lists onyx stones as part of the materials for the tabernacle, specifically for the ephod and breastpiece.

In Exodus 32:4, Aaron uses a graving tool to make the golden calf — the same technique commanded for holy use here, creating a stark contrast.

Exodus 35:9 mentions onyx stones as a contribution for the ephod — the same stones commanded here for engraving.