How long will you mourn over what I have rejected? - 1Samuel 16:1-13 & 2 Samuel 3:1

1 Samuel 16:1

16 Now the Lord said to Samuel, “How long will you mourn for Saul, seeing I have rejected him from reigning over Israel? Fill your horn with oil, and go; I am sending you to Jesse the Bethlehemite. For I have provided Myself a king among his sons.”