# Yahweh of hosts ... says this

Jeremiah introduces an important message from Yahweh. See Jeremiah 6:6. Jeremiah's burial of the stones was intended to be a symbolic action for the people. This was supposed to teach the people a lesson.

# I will place his throne over these stones that you, Jeremiah, have buried. Nebuchadnezzar will place his pavilion over them

"I will cause him to rule as king over the people of Egypt. He will place his throne and pavilion over these stones you have buried" 

# pavilion

a very large tent