Adam Clarke on 1 Samuel 2:29

Wherefore kick ye at my sacrifice - They disdained to take the part allowed by law; and would take for themselves what part they pleased, and as much as they pleased, 1Sam 2:13-16 : thus they kicked at the sacrifices.

Honourest thy sons above me - Permitting them to deal, as above, with the offerings and sacrifices, and take their part before the fat, etc., was burnt unto the Lord: thus they were first served. At this Eli connived, and thus honored his sons above God.