And out of all the tribes of Israel I selected your father to be My priest, to offer sacrifices on My altar, to burn incense, and to wear an ephod in My presence. I also gave to the house of your father all the food offerings of the Israelites.
Eli reproved his sons too gently, and did not threaten them as he should, and therefore God sent a prophet to him to reprove him sharply, and to threaten him, because, by his indulgence of them, he had strengthened their hands in their wickedness.
Commenting on 1 Samuel 2:27-36
Wherefore kick ye at my sacrifice, and at mine offering, which I have commanded in my habitation,.... To be offered in the tabernacle, where the Lord had his dwelling; which they might be said to kick and spurn at, despising them, as if there were not enough of them, nor the best of them given to them for their maintenance; a metaphor taken from cattle...
And did I choose him - The high priesthood was a place of the greatest honor that could be conferred on man, and a place of considerable emolument; for from their part of the sacrifices they derived a most comfortable livelihood.