Revelation 9:19 Revelation 9:19 For their power is in their mouth, and in their tails: for their tails were like unto serpents, and had heads, and with them they do hurt. In this verse is declared how the Turks did further mischief unto the Romans. Their power is in their mouth, and in their tails. The Turkish power was in their mouth; that is, their Mahometan doctrine and worship, whereby they did hurt to the souls of those Romans that turned to the Turks religion. For their tails were like unto serpents, and had heads, and with them they do hurt. Thereby, the Turks did not only kill the bodies of many apostate Romans, but did also poison many of their souls.