Charles Ellicott Commentary 1 Samuel 2:16

"And if the man said unto him, They will surely burn the fat first, and then take as much as thy soul desireth; then he would say, Nay, but thou shalt give it me now: and if not, I will take it by force." — 1 Samuel 2:16 (ASV)

And if not, I will take it by force. —The solemn ritual of the sacrifice was not only transgressed by these covetous, greedy, ministering priests, but the worshippers were compelled by force to yield to these new lawless customs, probably introduced by these sons of the high priest Eli.