From the LCMS website:
Samuel, last of the Old Testament judges and first of the prophets (after Moses), lived during the 11th century B.C. The child of Elkanah, an Ephraimite, and his wife Hannah, Samuel was from early on consecrated by his parents for sacred service and trained in the house of the Lord at Shiloh by Eli the priest. Samuel’s authority as a prophet was established by God (1 Sam. 3:20). He anointed Saul to be Israel’s first king (10:1). Later, as a result of Saul’s disobedience to God, Samuel repudiated Saul’s leadership and then anointed David to be king in place of Saul (16:13). Samuel’s loyalty to God, his spiritual insight, and his ability to inspire others made him one of Israel’s great leaders.