For though you wash yourself with lye, and use much soap, yet your iniquity is marked before me,
says the Lord GOD.
All Commentaries on Jeremiah 2:22 Go To Jeremiah 2
Eusebius of Caesarea
So also God is introduced by the prophet as saying to the person who had become evil by his own choice, “Yet I had planted you a fruitful vine. How have you turned back into a wild vine?” Anywhere it is said that evils happen to the wicked from God, it must be understood as an accidental coincidence of name. This name is given to the chastisements that God in his goodness is said to send not for the hurt of those who are chastised but for their benefit and profit, in the same way that a physician might be thought to apply bad things in his painful and bitter remedies to save the sick.