Jeremiah 4:1-6

1 If you return, O Israel, says the Lord, if you return to me, if you remove your abominations from my presence, and do not waver,
2 and if you swear, "As the Lord lives!" in truth, in justice, and in uprightness, then nations shall be blessed by him, and by him they shall boast.
3 For thus says the Lord to the people of Judah and to the inhabitants of Jerusalem: Break up your fallow ground, and do not sow among thorns.
4 Circumcise yourselves to the Lord, remove the foreskin of your hearts, O people of Judah and inhabitants of Jerusalem, or else my wrath will go forth like fire, and burn with no one to quench it, because of the evil of your doings.
5 Declare in Judah, and proclaim in Jerusalem, and say: Blow the trumpet through the land; shout aloud and say, "Gather together, and let us go into the fortified cities!"
6 Raise a standard toward Zion, flee for safety, do not delay, for I am bringing evil from the north, and a great destruction.