Albert Barnes Commentary Jeremiah 29:8

"For thus saith Jehovah of hosts, the God of Israel: Let not your prophets that are in the midst of you, and your diviners, deceive you; neither hearken ye to your dreams which ye cause to be dreamed." — Jeremiah 29:8 (ASV)

Your prophets and your diviners - The evils from which the people had suffered so cruelly at home followed them in their exile.

Dreams which ye cause to be dreamed - As long as there was a market for dreams, so long there would be plenty of impostors to supply them.