Then Saul pleaded again, "I know I have sinned. But please, at least honor me before the leaders and before my people by going with me to worship the LORD your God."
So Samuel finally agreed and went with him, and Saul worshiped the LORD.
Then Samuel said, "Bring King Agag to me." Agag arrived full of smiles, for he thought, "Surely the worst is over, and I have been spared!"
References for 1 Samuel 15:32
But Samuel said, "As your sword has killed the sons of many mothers, now your mother will be childless." And Samuel cut Agag to pieces before the LORD at Gilgal.
Then Samuel went home to Ramah, and Saul returned to his house at Gibeah.
Samuel never went to meet with Saul again, but he mourned constantly for him. And the LORD was sorry he had ever made Saul king of Israel.