'Treachery' in the Bible

From the skirt of the earth we heard songs, The desire of the righteous. And I say, 'Leanness is to me, Leanness is to me, woe is to me.' Treacherous dealers dealt treacherously, Yea, treachery, treacherous dealers dealt treacherously.

Her prophets unstable -- men of treachery, Her priests have polluted the sanctuary, They have violated the law.