Adam Clarke on 2 Kings 18:22

Whose high places and whose altars Hezekiah hath taken away - This was artfully malicious. Many of the people sacrificed to Jehovah on the high places; Hezekiah had removed them, (2Kgs 18:4), because they were incentives to idolatry: Rab-shakeh insinuates that by so doing he had offended Jehovah, deprived the people of their religious rights, and he could neither expect the blessing of God nor the cooperation of the people.