The Enemy Defeated

Was David and Goliath much of a fight? Why did Goliath disdain David and what is the significance of the word disdain? How is David a type of Christ in representation defeating the enemy? How is the entire Old Testament a picture book of Christ? Why did David lop the head of Goliath off? Why was David raised up as king and deliverer of His people? Why did David run toward Goliath and not away from Goliath? Why should we view this battle as Spiritual warfare? How did the curse fall on David's head as a picture of substitution? How did the Philistines run away from David alone and not all the people?