This is what the Lord says about the king of Assyria: He shall not enter this city or shoot an arrow at it. He shall not advance towards it with a shield, or build a siege ramp against it.
He will kill the people living in your villages of the mainland with the sword. He will construct siege works to attack you. He will build a ramp against your walls, and his soldiers will hold their shields above them as they advance on you.
Show that it's under siege: establish a siege perimeter all around it, build a siege ramp against it, set up the enemy camps beside it, and put battering rams on all sides around it.