12 Eli's own sons were a bad lot. They didn't know God and could not have cared less 13 about the customs of priests among the people. Ordinarily, when someone offered a sacrifice, the priest's servant was supposed to come up and, while the meat was boiling, 14 stab a three-pronged fork into the cooking pot. The priest then got whatever came up on the fork. But this is how Eli's sons treated all the Israelites who came to Shiloh to offer sacrifices to God. 15 Before they had even burned the fat to God, the priest's servant would interrupt whoever was sacrificing and say, "Hand over some of that meat for the priest to roast. He doesn't like boiled meat; he likes his rare." 16 If the man objected, "First let the fat be burned - God's portion! - then take all you want," the servant would demand, "No, I want it now. If you won't give it, I'll take it." 17 It was a horrible sin these young servants were committing - and right in the presence of God! - desecrating the holy offerings to God.
Matthew Henry's Commentary on 1 Samuel 2:12-17
Commentary on 1 Samuel 2:11-26
(Read 1 Samuel 2:11-26)
Samuel, being devoted to the Lord in a special manner, was from a child employed about the sanctuary in the services he was capable of. As he did this with a pious disposition of mind, it was called ministering unto the Lord. He received a blessing from the Lord. Those young people who serve God as well as they can, he will enable to improve, that they may serve him better. Eli shunned trouble and exertion. This led him to indulge his children, without using parental authority to restrain and correct them when young. He winked at the abuses in the service of the sanctuary till they became customs, and led to abominations; and his sons, who should have taught those that engaged in the service of the sanctuary what was good, solicited them to wickedness. Their offence was committed even in offering the sacrifices for sins, which typified the atonement of the Saviour! Sins against the remedy, the atonement itself, are most dangerous, they tread under foot the blood of the covenant. Eli's reproof was far too mild and gentle. In general, none are more abandoned than the degenerate children of godly persons, when they break through restraints.