1 Samuel 15:11, 23, 26, 28

“I regret that I made Saul king, for he has turned away from following Me and has not carried out My commands.” Samuel was angry [over Saul’s failure] and he cried out to the LORD all night.

“For rebellion is as [serious as] the sin of divination (fortune-telling), And disobedience is as [serious as] false religion and idolatry. Because you have rejected the word of the LORD, He also has rejected you as king.”

But 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.”

So Samuel said to him, “The LORD has torn the kingdom of Israel from you today and has given it to your neighbor, who is better than you.