Revelation 9:19-21 New King James Version (NKJV)
19 For [a]their power is in their mouth and in their tails; for their tails are like serpents, having heads; and with them they do harm.
20 But the rest of mankind, who were not killed by these plagues, did not repent of the works of their hands, that they should not worship demons, and idols of gold, silver, brass, stone, and wood, which can neither see nor hear nor walk. 21 And they did not repent of their murders or their [b]sorceries or their sexual immorality or their thefts.
Revelation 9:19-21 New International Version (NIV)
19 The 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.
20 The rest of mankind who were not killed by these plagues still did not repent of the work of their hands; they did not stop worshiping demons, and idols of gold, silver, bronze, stone and wood—idols that cannot see or hear or walk. 21 Nor did they repent of their murders, their magic arts, their sexual immorality or their thefts.