dealt very treacherously # 23_ISA_24_16 # From the uttermost part of the earth have we heard songs, [even] glory to the righteous. But I said, My leanness, my leanness, woe unto me! the treacherous dealers have dealt treacherously; yea, the treacherous dealers have dealt very treacherously. 
dealt very treacherously # 24_JER_05_11 # For the house of Israel and the house of Judah have dealt very treacherously against me, saith the LORD.