1 Samuel 15:19-21

Why then did you not obey the voice of ADONAI, but rushed greedily onto the spoil—doing what was evil in ADONAI’s eyes?” “But I did obey the voice of ADONAI,” Saul said to Samuel. “I went on the mission on which ADONAI sent me, and brought back Agag the king of Amalek—and utterly destroyed the Amalekites. But the people took some of the spoil, sheep and oxen—the best of what was under the ban of destruction— to sacrifice to ADONAI your God in Gilgal.”