In your filthiness is lewdness. Because I would have cleansed you, yet you are not clean, You will not be cleansed from your filthiness again until I have spent My wrath on you.
Despite God’s reasonable efforts to cleanse His people (i.e. without making them into robots), they resisted Him and remained morally impure. This shows that God does not operate with Irresistible Grace and that God has created men with a free will, which God permits men to exercise, and to experience the consequences of, both for good and for bad.