in their tails # 66_REV_09_10  And they had tails like unto scorpions, and there were stings in their tails_ and their power [was] to hurt men five months. ## And they had tails like unto scorpions, and there were stings in their tails: and their power [was] to hurt men five months. 
in their tails # 66_REV_09_19  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 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.