In 1 Samuel 28, King Saul, facing defeat by the Philistines, turns to a necromancer for guidance after God does not respond to him. This decision highlights his despair and disobedience, leading to a confrontation with the deceased prophet Samuel, who prophesies Saul's death and the loss of his kingdom. The passage serves as a cautionary tale about the consequences of turning away from God and the dangers of seeking unholy assistance.