NET
28 Her prophets coat their messages with whitewash. They see false visions and announce lying omens for them, saying, ‘This is what the Sovereign Lord says,’ when the Lord has not spoken.
Darby
28 And her prophets have daubed for them with untempered [mortar], seeing vanity and divining lies unto them, saying, Thus saith the Lord Jehovah! and Jehovah hath not spoken.
KJV
28 And her prophets have daubed them with untempered [morter], seeing vanity, and divining lies unto them, saying, Thus saith the Lord GOD, when the LORD hath not spoken.