1 Samuel 2:15-17

15Even before the fat was burned, the servant of the priest would come and say to the man who was sacrificing, “Give the priest some meat to roast, because he will not accept boiled meat from you, but only raw.”

16And if any man said to him, “The fat must be burned first; then you may take whatever you want,” the servant would reply, “No, you must give it to me right now. If you refuse, I will take it by force!”

17Thus the sin of these young men was severe in the sight of the LORD, for they1 were treating the LORD’s offering with contempt.