Her prophets are light and treacherous persons: her priests have polluted the sanctuary, they have done violence to the law.
Her prophets are light - persons in whose life and teaching there is no truth gravity, or steadiness.
Treacherous - false to Yahweh, whose prophets they profess to be (Jeremiah 23:32; Ezekiel 22:28).
Her priests have polluted the sanctuary - by their profane deeds.