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;''See Gill on "Eze 13:10".