Adam Clarke on 2 Kings 18:37

Then came Eliakim - and Shebna - and Joah - to Hezekiah with their clothes rent - It was the custom of the Hebrews, when they heard any blasphemy, to rend their clothes, because this was the greatest of crimes, as it immediately affected the majesty of God, and it was right that a religious people should have in the utmost abhorrence every insult offered to the object of their religious worship. These three ambassadors lay the matter before the king as God's representative; he lays it before the prophet, as God's minister; and the prophet lays it before God, as the people's mediator.