Jeremiah 27:6
And now have I given all these lands into the hand of Nebuchadnezzar the king of Babylon, my servant; and the beasts of the field have I given him also to serve him. And now have I given all these lands into the hand of Nebuchadnezzar the king of Babylon, my servant; and the beasts of the field have I given him also to serve him.
The message was delivered through an acted parable that pressed Judah to avoid entangling alliances with Egypt and to keep friendly relations with Babylon as danger drew near. It stands among the letters and records dealing with the Babylonian captivity and with Jeremiah's controversy with the false prophets. God had given the surrounding lands and nations, and even the wild animals, into Nebuchadnezzar's power as punishment for their rebellion.
Nebuchadnezzar is called God's servant because God appointed him to rule those nations. That Babylonian rule was appointed for a limited time, after which God would deliver the nations. Until that deliverance the nations were to submit to and serve Nebuchadnezzar and his descendants. Nations that submitted to the Babylonian yoke could remain in their own lands, while resistance would bring famine, war, and pestilence or disease. The chapter belongs to the prophetic testimony that Daniel later studied to understand the promised seventy years of Jerusalem's desolation and the return of the captives.