Charles Ellicott Commentary Ezekiel 22:28

"And her prophets have daubed for them with untempered [mortar], seeing false visions, and divining lies unto them, saying, Thus saith the Lord Jehovah, when Jehovah hath not spoken." — Ezekiel 22:28 (ASV)

With untempered mortar. —See Note on Ezekiel 13:10. The prophets are here again spoken of in reference to their powerful influence upon the princes in leading them astray by falsehoods. Seeing vanity is an expression for pretended and false visions (Ezekiel 13:9–10).