Commentaries:
This description of Judah is given just before God drove them into captivity to Babylon. God's pattern, beginning back in Genesis 15, is to scatter, to destroy when the iniquity is full. God determines what "full" is, and it might be different for the Amorites than it is for those who have made a covenant with Him. Nonetheless, when God judges that the people's iniquity has reached a certain point, He scatters. This description shows that they were filled with iniquity from top to bottom.
John W. Ritenbaugh
What Is the Work of God Now? (Part One)
Other Forerunner Commentary entries containing Jeremiah 6:8:
2 Peter 2:4