In chapter 19 [[Jeremiah]] went to the valley of the son of Hinnom, a place the [[Jews]] had dedicated to the worship of idols. Some of the worst sins in Jewish history were committed there. The name "son of Hinnom" was written "Ge-Hinnom," and eventually became "Gehenna" in the Greek language, which is the [[New Testament]] [[Word]] for "[[hell]].".
As [[Jeremiah]] went to this valley he took with him a finished vase and held it up before the elders of the land as he preached his sermon on [[judgment]]. He told them that they had forsaken [[God]] and worshiped idols; that they had sinned against [[God]]'s Word; but that the day would come when the valley would not be called Tophet, but would be known as The Valley of Slaughter. He told them that [[judgment]] was coming to [[Judah]] ; then he broke the vase and it could never be repaired (verses 10 and 11).
In chapters 21-24 we again see [[Jeremiah]] at his task of preaching. Notice that he went from his vase-breaking rendezvous in Hinnom to the Temple, and began to proclaim the same message there to the people. He was put in prison, but was later released.
Chapter 21 belongs to the last days of [[Jeremiah]]'s life. King Zedekiah, frightened at the approach of the [[Babylon]]ian army, appeals to [[Jeremiah]] to intercede with [[God]]. [[Jeremiah]] advises Zedekiah to yield the city to the [[Babylon]]ians, in order to [[save]] the people from [[death]].
In chapter 22 [[Jeremiah]] gives a warning to Jehoiakim, a cruel and wicked king. "Shallum" in verse 11 was Jehoahaz, who was carried to [[Egypt]] and died there (II Kings 23:31-34). Jehoiakim's miserable [[death]] (verses 18 and 19) is hinted in II Kings 24:6.