Psalms 106:34-38

The people did not destroy the other nations as the LORD had told them to do. Instead, they mixed with the other nations and learned their customs. They worshiped other nations’ idols and were trapped by them. They even killed their sons and daughters as sacrifices to demons. They killed innocent people, their own sons and daughters, as sacrifices to the idols of Canaan. So the land was made unholy by their blood.