1 Samuel 15:11

11 "I regret that I made Saul king, for he has turned back from following me, and has not carried out my commands." Samuel was angry; and he cried out to the Lord all night.

1 Samuel 15:11 In-Context

9 Saul and the people spared Agag, and the best of the sheep and of the cattle and of the fatlings, and the lambs, and all that was valuable, and would not utterly destroy them; all that was despised and worthless they utterly destroyed.
10 The word of the Lord came to Samuel:
11 "I regret that I made Saul king, for he has turned back from following me, and has not carried out my commands." Samuel was angry; and he cried out to the Lord all night.
12 Samuel rose early in the morning to meet Saul, and Samuel was told, "Saul went to Carmel, where he set up a monument for himself, and on returning he passed on down to Gilgal."
13 When Samuel came to Saul, Saul said to him, "May you be blessed by the Lord; I have carried out the command of the Lord."
New Revised Standard Version Bible, copyright 1989, Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.