In song, lyrics about the Exodus were a metaphor for freedom from slavery. Songs like "Steal Away (to Jesus)", or "Swing Low, Sweet Chariot" raised unexpectedly in a dusty field, or sung softly in the dark of night, signaled that the coast was clear and the time to escape had come. The River Jordan became the Ohio River, or the Mississippi, or another body of water that had to be crossed on the journey to freedom. “Wade in the Water” contained explicit instructions to fugitive slaves on how to avoid capture and the route to take to successfully make their way to freedom. Leaving dry land and taking to the water was a common strategy to throw pursuing bloodhounds off one's trail. “The Gospel Train”, and “Swing Low, Sweet Chariot” all contained veiled references to the Underground Railroad, and "Follow the Drinking Gourd" contained a coded map to the Underground Railroad. The title itself was an Africanized reference to the Big Dipper, which pointed the way to the North Star and freedom.