John Gill Commentary 1 Samuel 3:11

"And Jehovah said to Samuel, Behold, I will do a thing in Israel, at which both the ears of every one that heareth it shall tingle." — 1 Samuel 3:11 (ASV)

And the Lord said to Samuel
The voice of the Lord continued speaking to him: behold,

I will do a thing in Israel ;
which may be particularly interpreted of the taking of the ark, and the slaying of the two sons of Eli; and which is elsewhere represented as the Lord's doing, for the sins of Eli's family, (Psalms 78:61Psalms 78:62)

at which both the ears of everyone that hears it shall tingle ;
be struck with horror and amazement, and quite stunned, and know not what to think or say, like persons surprised with a violent clap of thunder, which strikes their ears so strongly, that the noise of it is not soon gone from them; this was verified in Eli, and in his daughter-in-law particularly, who, at the news of the above things, the one fell backwards and broke his neck, and the other fell into labour and died; and all Israel were struck with astonishment at these things.