New International VersionThe power of the horses was in their mouths and in their tails; for their tails were like snakes, having heads with which they inflict injury.
American Standard VersionFor the power of the horses is in their mouth, and in their tails: for their tails are like unto serpents, and have heads; and with them they hurt.
Berean Study BibleFor the power of the horses was in their mouths and in their tails; indeed, their tails were like snakes, having heads with which to inflict harm.
Douay-Rheims BibleFor the power of the horses is in their mouths, and in their tails. For, their tails are like to serpents, and have heads: and with them they hurt.
English Revised VersionFor the power of the horses is in their mouth, and in their tails: for their tails are like unto serpents, and have heads; and with them they do hurt.
King James BibleFor 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.
World English BibleFor the power of the horses is in their mouths, and in their tails. For their tails are like serpents, and have heads, and with them they harm.
Young's Literal Translation for their authorities are in their mouth, and in their tails, for their tails are like serpents, having heads, and with them they do injure;
Revelation 9:19 Additional Translations ... 
