6 and Saul saith unto the Kenite, 'Go, turn aside, go down from the midst of Amalek, lest I consume thee with it, and thou didst kindness with all the sons of Israel, in their going up out of Egypt;' and the Kenite turneth aside from the midst of Amalek.
Matthew Henry's Commentary on 1 Samuel 15:6
Commentary on 1 Samuel 15:1-9
(Read 1 Samuel 15:1-9)
The sentence of condemnation against the Amalekites had gone forth long before, Revelation 18:4. As the commandment had been express, and a test of Saul's obedience, his conduct evidently was the effect of a proud, rebellious spirit. He destroyed only the refuse, that was good for little. That which was now destroyed was sacrificed to the justice of God.