1 Samuel 15:7-12

7Then Saul attacked the Amalekites all the way from Havilah to Shur, near the eastern border of Egypt. 8He took Agag king of the Amalekites alive, and all his people he totally destroyed with the sword.

9But Saul and the army spared Agag and the best of the sheep and cattle, the fat calves Or the grown bulls; the meaning of the Hebrew for this phrase is uncertain. and lambs—everything that was good. These they were unwilling to destroy completely, but everything that was despised and weak they totally destroyed. 10Then the word of the LORD came to Samuel:

11“I regret that I have made Saul king, because he has turned away from me and has not carried out my instructions.” Samuel was angry, and he cried out to the LORD all that night.

12Early in the morning Samuel got up and went to meet Saul, but he was told, “Saul has gone to Carmel. There he has set up a monument in his own honor and has turned and gone on down to Gilgal.”