Jeremiah 4:1-5

“If you, Israel, will return, then return to me,” declares the LORD. “If you put your detestable idols out of my sight and no longer go astray, and if in a truthful, just and righteous way you swear, ‘As surely as the LORD lives,’ then the nations will invoke blessings by him and in him they will boast.” This is what the LORD says to the people of Judah and to Jerusalem: “Break up your unplowed ground and do not sow among thorns. Circumcise yourselves to the LORD, circumcise your hearts, you people of Judah and inhabitants of Jerusalem, or my wrath will flare up and burn like fire because of the evil you have done— burn with no one to quench it. “Announce in Judah and proclaim in Jerusalem and say: ‘Sound the trumpet throughout the land!’ Cry aloud and say: ‘Gather together! Let us flee to the fortified cities!’