King James Version
Read in contextFor 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.
All translations
5 of 5 translations contain this numbered verse.
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.
For 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.
For 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.
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;
For 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.