The Apocalypse of St. John the Apostle (Author John)
9:17et ita vidi equos in visione et qui sedebant super eos habentes loricas igneas et hyacinthinas et sulphureas et capita equorum erant tamquam capita leonum et de ore ipsorum procedit ignis et fumus et sulphur
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.