Exodus 17:8-16

8 The Amalekites fought Israel at Rephidim.
9 Moses said to Joshua, "Choose some of our men. Then fight the Amalekites. Tomorrow I will stand on top of the hill. I will hold in my hand the staff God told me to take along."
10 Joshua did as Moses told him and fought the Amalekites, while Moses, Aaron, and Hur went to the top of the hill.
11 As long as Moses held up his hands, Israel would win, but as soon as he put his hands down, the Amalekites would start to win.
12 Eventually, Moses' hands felt heavy. So Aaron and Hur took a rock, put it under him, and he sat on it. Aaron held up one hand, and Hur held up the other. His hands remained steady until sunset.
13 So Joshua defeated the Amalekite army in battle.
14 The LORD said to Moses, "Write this reminder on a scroll, and make sure that Joshua hears it, too: I will completely erase any memory of the Amalekites from the earth."
15 Moses built an altar and called it The LORD Is My Banner.
16 He said, "Because a hand was lifted against the LORD's throne, he will be at war against the Amalekites from one generation to the next."

Exodus 17:8-16 Meaning and Commentary

INTRODUCTION TO EXODUS 17

The children of Israel coming to Rephidim, want water, and chide with Moses about it, who, crying to the Lord, is bid to smite the rock, from whence came water for them, and he named the place from their contention with him, Ex 17:1-7 at this place Amalek came and fought with Israel, who, through the prayer of Moses, signified by the holding up of his hands, and by the sword of Joshua, was vanquished, Ex 17:8-13, for the remembrance of which it was ordered to be recorded in a book, and an altar was built with this inscription on it, "Jehovahnissi": it being the will of God that Amalek should be fought with in every generation until utterly destroyed, Ex 17:14-16.

Exodus 17:8-16 In-Context

6 I'll be standing in front of you there by a rock at Mount Horeb. Strike the rock, and water will come out of it for the people to drink." Moses did this while the leaders of Israel watched him.
7 He named that place Massah [Testing] and Meribah [Complaining] because the Israelites complained and because they tested the LORD, asking, "Is the LORD with us or not?"
8 The Amalekites fought Israel at Rephidim.
9 Moses said to Joshua, "Choose some of our men. Then fight the Amalekites. Tomorrow I will stand on top of the hill. I will hold in my hand the staff God told me to take along."
10 Joshua did as Moses told him and fought the Amalekites, while Moses, Aaron, and Hur went to the top of the hill.
11 As long as Moses held up his hands, Israel would win, but as soon as he put his hands down, the Amalekites would start to win.
12 Eventually, Moses' hands felt heavy. So Aaron and Hur took a rock, put it under him, and he sat on it. Aaron held up one hand, and Hur held up the other. His hands remained steady until sunset.
13 So Joshua defeated the Amalekite army in battle.
14 The LORD said to Moses, "Write this reminder on a scroll, and make sure that Joshua hears it, too: I will completely erase any memory of the Amalekites from the earth."
15 Moses built an altar and called it The LORD Is My Banner.
16 He said, "Because a hand was lifted against the LORD's throne, he will be at war against the Amalekites from one generation to the next."
GOD'S WORD® is a copyrighted work of God's Word to the Nations. Copyright © 1995 by God's Word to the Nations. All rights reserved. Used by permission.