Hezekiah was desecrating idol worship (not very pc of him) and was showing himself as one of the most faithful kings of Judah. It was under Hezekiah and counselor/prophet, Isaiah, that 185,000 Assyrian soldiers died in one evening without an arrow being shot or a spear being thrown.
Dear Sennacherib; you want a little more? Just c’mon back. Love, King Hezekiah.