1 Samuel 15:32-33

Agag came unto him delicately Hebrew, מעדנת, magnadannoth, in delights, or ornaments; that is, he came not like an offender, expecting the sentence of death, but in the garb, and gesture, and majesty of a king. And Agag said Or, For Agag said; this being mentioned as the reason why he came so. Surely the bitterness of death is past I, who have escaped death from a warlike prince and his soldiers in the fury of battle, shall certainly not suffer it from a prophet in time of peace. As thy sword hath made women childless By this it appears that he had been a tyrant; and guilty of many bloody actions; and was now cut off, not merely for the sins of his ancestors four hundred years ago, but also for his own merciless cruelty. Samuel hewed Agag in pieces This he doubtless did by a divine instinct, and in pursuance of God's express command, which had been sinfully neglected and disobeyed by Saul, but is now executed by Samuel. It is not said that Samuel cut Agag in pieces with his own hand; perhaps he only commanded him to be slain by proper officers. In those days, however, it was no unusual thing for the greatest persons to perform these executions. But no private persons are authorized to make such instances as these precedents for taking the sword of justice into their own hands. For we must be governed in our own conduct by the laws of God, and not by extraordinary examples. Before the Lord in Gilgal That is, before the altar of the Lord, where they had been praying and offering sacrifices.