23 For they have done outrageous things in Israel; they have committed adultery with their neighbors’ wives, and in my name they have uttered lies—which I did not authorize. I know it and am a witness to it,” declares the LORD.

Read Jeremiah 29:23 Using Other Translations

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.
because they have done an outrageous thing in Israel, they have committed adultery with their neighbors' wives, and they have spoken in my name lying words that I did not command them. I am the one who knows, and I am witness, declares the LORD.'"
For these men have done terrible things among my people. They have committed adultery with their neighbors’ wives and have lied in my name, saying things I did not command. I am a witness to this. I, the LORD, have spoken.”