John Gills Exposition of the Bible Commentary - Exodus 17:13
And Joshua discomfited Amalek and his people with the edge of the sword. Amalek being distinguished from "his people", has led some to think that Amalek was the name of the king, or general of the army, and that it was a common name to the kings of that nation, as Pharaoh was to the kings of Egypt; but for this there is no foundation in the Scriptures: as Amelek signifies the Amalekites, his people may design the confederates and auxiliaries, the other people, as Ben Gersom expresses it,... read more
Matthew Henry's Complete Commentary - Exodus 17:8-16
We have here the story of the war with Amalek, which, we may suppose, was the first that was recorded in the book of the wars of the Lord, Num. 21:14. Amalek was the first of the nations that Israel fought with, Num. 24:20. Observe, I. Amalek's attempt: They came out, and fought with Israel, Exod. 17:8. The Amalekites were the posterity of Esau, who hated Jacob because of the birthright and blessing, and this was an effort of the hereditary enmity, a malice that ran in the blood, and perhaps... read more