falsely
Jeremiah 29:23
Because they have committed villany in Israel, and have committed adultery with their neighbours' wives, and have spoken lying words in my name, which I have not commanded them; even I know, and am a witness, saith the LORD.
Jeremiah 29:31
Send to all them of the captivity, saying, Thus saith the LORD concerning Shemaiah the Nehelamite; Because that Shemaiah hath prophesied unto you, and I sent him not, and he caused you to trust in a lie:
Jeremiah 27:15
For I have not sent them, saith the LORD, yet they prophesy a lie in my name; that I might drive you out, and that ye might perish, ye, and the prophets that prophesy unto you.