The third abomination was that women were weeping for the god Tammuz at the north gate of the Lord’s temple.
Tammuz was a Babylonian god. He was also called Dumuzi. This ritual marked his death and descent into the underworld (the place of the dead). Each year, people believed that this god lost his power and later regained it. They connected this cycle to the yearly changes in nature, such as the dying and growing of crops.
The women mourned for Tammuz in a ritual ceremony. They believed that their mourning would help bring back fertility (the ability to produce crops and life) to the land.
Instead of praising and worshiping the true and living God, the people were grieving for a false god who was said to die each year.