1 Samuel 3:13 - Ellicott's Commentary On The Whole Bible

Because his sons made themselves vile. — The enormity of the sin of Eli and his house, which was to be so fearfully punished, must be measured by the extent of the mischief it worked; well-nigh all Israel were involved in it. The fatal example the priests had set at Shiloh filtrated through the entire people; the result was, that unbelief in the Eternal was becoming general throughout the land. The old pure religion was rapidly dying out of the hearts of the men, and the profligacy and covetousness of Shiloh would soon have been copied only too faithfully in all the homes of Israel. This fearful state of things was known to the high priest and judge, and still the weak and indulgent father refrained from removing his sons from their high office.