Jeremiah 4:3-4

3Thus says Adonai to the people of Judah and to Jerusalem: “Break up your unplowed ground and do not sow among thorns.

4Circumcise yourselves to Adonai and remove the foreskins of your heart, men of Judah and inhabitants of Jerusalem. Else My wrath will break out like fire and blaze, with no one to quench it, because of your evil deeds!”