I seem to have forgotten, but now I will show that I remember, and now will revenge, those old injuries done four hundred years ago, which now I will punish in their children; which was the more just, because they continued in their parents cruel practices, below, 1 Samuel 15:33. In the way when he came up from Egypt; when he was newly come out of cruel and long bondage, and was now weak, and weary, and faint, and hungry, Deuteronomy 25:18; and therefore it was barbarous and inhuman, instead of that pity which even nature prompted them to afford, to add affliction to the afflicted; it was also horrid impiety to fight against God himself, and to lift up their hand in a manner against the Lord's throne, as some translate these words, Exodus 17:16, whilst they struck at that people which God had brought forth in so stupendous and miraculous a way.
Related Commentaries of 1 Samuel 15:2
1 Samuel 15:2
2 Thus saith the LORD of hosts, I remember that which Amalek did to Israel, how he laid wait for him in the way, when he came up from Egypt.