Hinnom : a deep, narrow ravine separating Mount Zion from the so-called "Hill of Evil Counsel." It took its name from "some ancient hero, the son of Hinnom." It is first mentioned in Joshua 15:8. It had been the place where the idolatrous Jews burned their children alive to Moloch and Baal. A particular part of the valley was called Tophet, or the "fire-stove," where the children were burned. After the Exile, in order to show their abhorrence of the locality, the Jews made this valley the receptacle of the offal of the city, for the destruction of which a fire was, as is supposed, kept constantly burning there.
The Jews associated with this valley these two ideas,