From a 14 month old blog…
Thus says the Lord, “Go, buy a potter’s earthenware flask, and take some of the elders of the people and some of the elders of the priests, 2 and go out to the Valley of the Son of Hinnom at the entry of the Potsherd Gate, and proclaim there the words that I tell you. 3 You shall say, ‘Hear the word of the Lord, O kings of Judah and inhabitants of Jerusalem. Thus says the Lord of hosts, the God of Israel: Behold, I am bringing such disaster upon this place that the ears of everyone who hears of it will tingle (Jer 19:1-3 ESV).
“Earthenware” is made of clay and easily broken. And in the Valley of the Son of Hinnom, Jeremiah was to break the bottle in front of the priests and people, symbolizing the destruction of Judah and Jerusalem. And the response would be a “tingling of the ears” much different than what we normally associate with that term.
Because the people have forsaken me and have profaned this place by making offerings in it to other gods whom neither they nor their fathers nor the kings of Judah have known; and because they have filled this place with the blood of innocents, 5 and have built the high places of Baal to burn their sons in the fire as burnt offerings to Baal, which I did not command or decree, nor did it come into my mind— 6 therefore, behold, days are coming, declares the Lord, when this place shall no more be called Topheth, or the Valley of the Son of Hinnom, but the Valley of Slaughter (Jer 19:4-6 ESV).
In devoting their worship practices to strange divinities of paganism, the priests and people had “profaned this place.” They had even stooping so low in occultism that they sacrificed their children to Moloch. In was in the Valley of Hinnom where this had been carried out.
Source: Jeremiah 19