Verses with the word whisperer in the Apocrypha (3 verses):

Sirach 5:14
Be not called a whisperer, and lie not in wait with thy tongue: for a foul shame is upon the thief, and an evil condemnation upon the double tongue.

Sirach 21:28
A whisperer defileth his own soul, and is hated wheresoever he dwelleth.

Sirach 28:13
Curse the whisperer and doubletongued: for such have destroyed many that were at peace.