“Circumcise yourselves to the LORD, and take away the foreskins of your heart, ye men of Judah and inhabitants of Jerusalem: lest my fury come forth like fire, and burn that none can quench it, because of the evil of your doings.”
King James Version (KJV)
4:4 Circumcise - Put away your corruptions. Heart - Let it be inward, not outward in the flesh only.