1 Samuel 2:15-17

15 Sometimes, when people were offering sacrifices, the servant would come over, even before the fat had been cut off and sacrificed to the LORD. [3] Then the servant would tell them, “The priest doesn’t want his meat boiled! Give him some raw meat that he can roast!”

16 Usually the people answered, “Take what you want. But first, let us sacrifice the fat to the LORD.” “No,” the servant would reply. “If you don’t give it to me now, I’ll take it by force.”

17 Eli’s sons did not show any respect for the sacrifices that the people offered. This was a terrible sin, and it made the LORD very angry.