Harriet Tubman was part of the Underground Railroad.. Judas Iscariot betrayed or “turned his back on” Jesus. The religious reference really start to pick up right here. This line is to say that forgetting you’re roots, or where you’re from is treason. Extremely dishonorable.. Alot of times its for fame.. or money, in Judas' case. I used the underground railroad to play on being an underground artist.