Samuel's youth at Shiloh, the Philistines inflicted a decisive defeat against the Israelites at Eben-Ezer, placed the land under Philistine control, and took the sanctuary's Ark for themselves. Upon hearing the news of the capture of the Ark of the Covenant, and the death of his sons, Eli collapsed and died. When the Philistines had been in possession of the Ark for seven months and had been visited with calamities and misfortunes, they decided to return the Ark to the Israelites. According to Bruce C. Birch, Samuel was a key figure in keeping the Israelites' religious heritage and identity alive during Israel's defeat and occupation by the Philistines. "[I]t may have been possible and necessary for Samuel to exercise authority in roles that would normally not converge in a single individual (priest, prophet, judge)." After 20 years of oppression, Samuel, who had gained national prominence as a prophet (1 Samuel 3:20), summoned the people to the hill of Mizpah, and led them against the Philistines. The Philistines, having marched to Mizpah to attack the newly amassed Israelite army, were soundly defeated and fled in terror. The retreating Philistines were slaughtered by the Israelites. The text then states that Samuel erected a large stone at the battle site as a memorial, and there ensued a long period of peace thereafter. King-maker Samuel initially appointed his two sons Joel and Abijah as his successors; however, just like Eli's sons, Samuel's proved unworthy. The Israelites rejected them. Because of the external threat from other tribes, such as the Philistines, the tribal leaders decided that there was a need for a more unified, central government, and demanded Samuel appoint a king so that they could be like other nations. Samuel interpreted this as a personal rejection, and at first was reluctant to oblige, until reassured by a divine revelation. He warned the people of the potential negative consequences of such a decision. When Saul and his servant were searching for his father's lost donkeys, the servant suggested consulting the nearby Samuel. Samuel recognized Saul as the future king. Just before his retirement, Samuel gathered the people to an assembly at Gilgal, and delivered a farewell speech or coronation speech in which he emphasised how prophets and judges were more important than kings, that kings should be held to account, and that the people should not fall into idol worship, or worship of Asherah or