John Gill's Exposition of the Whole Bible
Ezekiel 22:28
And her prophets have daubed them with untempered mortar,.... Palliated their sins, declared it to be right to shed the blood they did; and seize on the estates of men; but this, though it might for a while satisfy the consciences of these princes, and stop the clamours of the people against them; yet would not last long, but be like the building of a wall with bad stuff, which will not stand; and daubing it with mortar, which will soon wash off. So the Targum,
"and the false prophets which are in the midst of her are like to those that build a wall, and daub it with mere clay, without straw;''
Seeing vanity, and divining lies unto them; pretending visions from God, when what they see, or pretend to see, is nothing but vanity and emptiness, mere delusions; and prophesying good things, peace and prosperity, when they are all lies; giving out they have messages from God, and are ordered to foretell that happy times will be, when it is all falsehood:
saying, thus saith the Lord God, when the Lord hath not spoken; herein mimicking the true prophets, who came in the name of the Lord, and usually prefaced their prophecies with a thus saith the Lord; and so did these false prophets, when the Lord said nothing to them, and gave them no commission to speak in his name, or say the things they did.