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.
Adullam
Adullam was one of the royal cities of the Canaanites referred to in the Hebrew Bible. Although listed in Joshua as being a city in the plain, it is actually partly in the hill country, partly in the plain. It stood near the highway which later became the Roman road in the Valley of Elah, the scene of David's victory over Goliath. It was here that Judah, the son of Jacob (Israel), came when he left his father and brothers in Migdal Eder, where he befriended a certain Hirah, an Adullamite, and where he met his first wife (unnamed in Genesis), the daughter of Shua. It was one of the towns which Rehoboam fortified against Egypt. Micah calls it "the glory of Israel."