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 17:10
Moses . . . went up . . . the hill . . . held up his hand--with the wonder-working rod; Moses acted as the standard bearer of Israel, and also their intercessor, praying for success and victory to crown their arms--the earnestness of his feelings being conspicuously evinced amid the feebleness of nature.
Adam Clarke on Exodus 17:10
Moses, Aaron, and Hur went up - It is likely that the Hur mentioned here is the same with that Hur mentioned Ch1 2:19, who appears from the chronology in that chapter to have been the son of Caleb, the son of Ezron, the son of Pharez, the son of Judah. The rabbins and Josephus say he was the brother-in-law of Moses, having married his sister Miriam. He was a person in whom Moses put much confidence; for he left him conjoint governor of the people with Aaron, when he went to confer with God on the mount, Exo 24:14. His grandson Bezaleel was the chief director in the work of the tabernacle; see Exo 31:2-5.
John Gill on Exodus 17:10
So Joshua did as Moses had said to him,.... He singled out some proper persons for the battle, and arrayed them with armour, and led them forth out of the camp, and went forth at the head of them:
and fought with Amalek; upon both armies meeting, a battle ensued:
and Moses, Aaron, and Hur, went up to the top of the hill; to the top of Mount Sinai or Horeb, not so much to see the battle fought, as to be seen by Joshua and the people of Israel, especially Moses with the rod in his hand lifted up, that they might behold it, and be encouraged through it to hope for and expect victory; and the other two went up with him to assist him in holding up his hands with the rod, as appears by what foll…