Chumash Classes: Beshalach, Part 10

Chp. 17 verses 7 -16: The place that they complained about water was called Massah and Meribah. Then Amalek comes and attacks Israel in Rephidim. Moshe tells Yehoshua to chose men to war with them. Moshe goes up to the top of the hill with the staff in his hand, Aaron and Chur are with him. When he lifts his hands Israel prevails and when he drops them Amalek prevails. He sits on a rock with Aaron and Chur supporting his hands. Yehoshua defeats Amalek. Hashem commands Moshe to write in the Torah that He would Utterly wipe out the memory of Amalek from under the heavens. Moshe builds an alter and calls it Adonai-nissi. He said that Hashem will war with Amalek from generation to generation..