Goliath
Goliath is described in the biblical Book of Samuel as a Philistine giant defeated by the young David in single combat. The story signified Saul's unfitness to rule, as Saul himself should have fought for the Kingdom of Israel.
Simpsons Bible Stories
Bart sees himself as King David, who kills Goliath, but has not won the war yet: Nelson is Goliath II, Goliath's son. Goliath II has killed Methuselah (Grampa), David's oldest friend in revenge. In retaliation, David challenges Goliath II, but having no stones to sling at him, David loses and is catapulted from the city. David then meets Ralph, a shepherd, who claims he can kill Goliath II. Ralph dies, which enrages David even more. He then trains to try to slay Goliath. Having to climb up the enormous Tower of Babel beforehand, David manages to kill Goliath by throwing a lit lantern down his throat. Goliath is surprisingly still alive, but is quickly killed by Ralph's gravestone, hurled by Ralph himself, who also had not died. Much to his shock, David is sent to jail as the townspeople claim that Goliath was the best King they ever had, building roads, libraries and hospitals. The dream ends with a title card that reads "A Bart Simpson Dream".