19 For their power is in their mouth and in their tails; for their tails were like unto serpents that have heads, and with them they do hurt.
Revelation 9:19 Cross References - EJ2000
Isaiah 9:15
15 The ancient and venerable to look upon is the head; the prophet that teaches lies, he is the tail.
Ephesians 4:14
14 That we no longer be children, tossed to and fro and carried about with every wind of doctrine, by the sleight of men and cunning craftiness, by which they lie in wait to deceive,
Revelation 9:10
10 And they had tails like unto scorpions, and there were stings in their tails; and their power was to hurt men five months.