Charles Ellicott Commentary 2 Kings 21:12

"therefore thus saith Jehovah, the God of Israel, Behold, I bring such evil upon Jerusalem and Judah, that whosoever heareth of it, both his ears shall tingle." — 2 Kings 21:12 (ASV)

Whoever hears of it. —Literally, his hearers. Many manuscripts. And the Hebrew margin read her (i.e., its) hearer.

Both his ears shall tingle. —The dreadful news shall affect him like a sharp piercing sound. (See the same metaphor in 1 Samuel 3:11; Jeremiah 19:3.)