Albert Barnes Commentary Jeremiah 23:25

"I have heard what the prophets have said, that prophesy lies in my name, saying, I have dreamed, I have dreamed." — Jeremiah 23:25 (ASV)

In Deuteronomy 13:1, a dreamer of dreams is used in a negative sense, and for good reason. God communicating His will by dreams was something so easy to counterfeit that it was inevitably misused.