1 Samuel 15:11

15:11 “I regret that I have made Saul king, for he has turned away from me and has not done what I told him to do.” Samuel became angry and he cried out to the Lord all that night.

1 Samuel 15:35

15:35 Until the day he died Samuel did not see Saul again. Samuel did, however, mourn for Saul, but the Lord regretted that he had made Saul king over Israel.