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.
David and Goliath (1960 film)
The Prophet Samuel foretells a new king will rule Israel to the dismay of King Saul and his cousin and commander in chief Abner. King Saul has been having a streak of bad luck since the Philistine captivity of the Ark and fears the newcomer but doesn't know who the new king will be.