1 Samuel 2:15-17
15 But even 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; he won’t accept boiled meat from you, but only raw.”
16 If the man said to him, “Let the fat be burned up first, and then take whatever you want,” the servant would then answer, “No, hand it over now; if you don’t, I’ll take it by force.”
17 This sin of the young men was very great in the Lord’s sight, for they were treating the Lord’s offering with contempt.