Yahweh said to Samuel, How long will you mourn for Saul, seeing I have rejected him from being king over Israel? fill your horn with oil, and go: I will send you to Jesse the Bethlehemite; for I have provided me a king among his sons.
Now that shows you how far Saul has strayed from the Lord, and the things of the Lord, he would actually kill the prophet of God. Samuel realized this, "This guy is really gone off the deep end. Lord if he hears I'm going to go down and anoint another king, he's gonna kill me."