theiodes describes the breastplates of the horsemen in Revelation 9:17 as sulphur-like.

Its sole attested use describes the breastplates worn by those riding the visionary horses as sulphur-like in Revelation 9:17.

1. Sulphur-like breastplates · dominant

   In Revelation 9:17, the accusative plural masculine form modifies the breastplates of those seated on the horses. The APB renders the description within the sequence “fiery and dark blue and sulphurous,” while the verse also describes fire, smoke, and sulfur issuing from the horses' mouths.

   Revelation 9:17

In the Anselm Project Bible: In Revelation 9:17, the APB presents the term as “sulphurous” in its description of the breastplates. This rendering is treated as confirmation of the clause rather than a precise lexical mapping.