Apocalipsis 9

Porque su poder está en su boca y en sus colas: porque sus colas eran semejantes á serpientes, y tenían cabezas, y con ellas dañan.

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.