Revelation 1:15

1:15 His feet were like polished bronze refined in a furnace, and his voice was like the roar of many waters.

Revelation 9:9

9:9 They had breastplates like iron breastplates, and the sound of their wings was like the noise of many horse-drawn chariots charging into battle.

tn The precise meaning of the term translated “polished bronze” (χαλκολιβάνῳ, calkolibanw), which appears nowhere else in Greek literature outside of the book of Revelation (see 2:18), is uncertain. Without question it is some sort of metal. BDAG 1076 s.v. χαλκολίβανον suggests “fine brass/bronze.” L&N 2.57 takes the word to refer to particularly valuable or fine bronze, but notes that the emphasis here and in Rev 2:18 is more on the lustrous quality of the metal.

tn Or “that has been heated in a furnace until it glows.”

tn Grk “sound,” but the idea is closer to the roar of a waterfall or rapids.

tn Or perhaps, “scales like iron breastplates” (RSV, NRSV) although the Greek term θώραξ (qwrax) would have to shift its meaning within the clause, and elsewhere in biblical usage (e.g., Eph 6:14; 1 Thess 5:8) it normally means “breastplate.” See also L&N 8.38.