1 Samuel 15:26-35

And Samuel said to Saul, “I will not return with you. For you have rejected the word of the LORD, and the LORD has rejected you from being king over Israel.” As Samuel turned to go away, Saul seized the skirt of his robe, and it tore. And Samuel said to him, “The LORD has torn the kingdom of Israel from you this day and has given it to a neighbor of yours, who is better than you. And also the Glory of Israel will not lie or have regret, for he is not a man, that he should have regret.” Then he said, “I have sinned; yet honor me now before the elders of my people and before Israel, and return with me, that I may bow before the LORD your God.” So Samuel turned back after Saul, and Saul bowed before the LORD. Then Samuel said, “Bring here to me Agag the king of the Amalekites.” And Agag came to him cheerfully. Agag said, “Surely the bitterness of death is past.” And Samuel said, “As your sword has made women childless, so shall your mother be childless among women.” And Samuel hacked Agag to pieces before the LORD in Gilgal. Then Samuel went to Ramah, and Saul went up to his house in Gibeah of Saul. And Samuel did not see Saul again until the day of his death, but Samuel grieved over Saul. And the LORD regretted that he had made Saul king over Israel.