The Bible repeats itself because history repeats itself. Just as the fabulously wealthy Pharaoh had been haunted by dreams of scarcity in the days of Joseph, now the fabulously powerful Nebuchadnezzar is haunted by dreams of insecurity. Just as Pharaoh had to have a Jewish slave (Joseph) interpret his bad dream, now Nebuchadnezzar needs another Jewish slave (Daniel) to interpret his bad dream.