'Voice of the Lord' in the Bible

Why did you not obey the voice of the Lord, but [instead] swooped down on the plunder [with shouts of victory] and did evil in the sight of the Lord?”

Saul said to Samuel, “I have obeyed the voice of the Lord, and have gone on the mission on which the Lord sent me, and have brought back Agag the king of Amalek, and have completely destroyed the Amalekites.

Samuel said,“Has the Lord as great a delight in burnt offerings and sacrificesAs in obedience to the voice of the Lord?Behold, to obey is better than sacrifice,And to heed [is better] than the fat of rams.

Because you did not obey the voice of the Lord and did not execute His fierce wrath on Amalek, therefore the Lord has done this thing to you this day.