4 Yes, circumcise your lives for God's sake. Plow your unplowed hearts, all you people of Judah and Jerusalem. Prevent fire - the fire of my anger - for once it starts it can't be put out. Your wicked ways are fuel for the fire. God's Sledgehammer Anger
Matthew Henry's Commentary on Jeremiah 4:4
Commentary on Jeremiah 4:3-4
(Read Jeremiah 4:3-4)
An unhumbled heart is like ground untilled. It is ground which may be improved; it is our ground let out to us; but it is fallow; it is over-grown with thorns and weeds, the natural product of the corrupt heart. Let us entreat the Lord to create in us a clean heart, and to renew a right spirit within us; for except a man be born again, he cannot enter into the kingdom of heaven.