Matthew Henry on Exodus 17:8–end
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, Exo 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 was now exasperated by the working of the promise towards an accomplishment. Consider this, 1. As Israel's affliction. They had been quarrelling with Moses (Exo 17:2), and now God sends Amalekites to quarrel…
Read the whole note in the consoleJamieson-Fausset-Brown on Exodus 17:13
Joshua discomfited Amalek--Victory at length decided in favor of Israel, and the glory of the victory, by an act of national piety, was ascribed to God (compare Jo1 5:4).
Adam Clarke on Exodus 17:13
Joshua discomfited Amalek and his people - Amalek might have been the name of the ruler of this people continued down from their ancestor, (see Clarke on Exo 17:8 (note)), as Pharaoh was the name of all succeeding kings in Egypt. If this were the case, then Amalek and his people mean the prince and the army that fought under him. But if Amalek stand here for the Amalekites, then his people must mean the confederates he had employed on this occasion.
John Gill on 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, they brought with them to fight against Israel. And so Jerom (z) says, by him another Canaanite dwelt, who also fought against Israel in the wilderness, of whom it is so written, and Amalek and the Canaanite…