Contemporary English Version
Joshua led the attack as Moses had commanded, while Moses, Aaron, and Hur stood on the hilltop.

Douay-Rheims Bible
Josue did as Moses had spoken, and he fought against Amalec; but Moses, and Aaron, and Hur, went up upon the top of the hill.

Josue did as Moses had spoken, and he fought against Amalec; but Moses, and Aaron, and Hur, went up upon the top of the hill.

Joshua

Joshua 11:15 As the Lord had commanded Moses his servant, so did Moses command Joshua, and he accomplished all: he left not one thing undone of all the commandments which the Lord had commanded Moses.

Matthew 28:20 Teaching them to observe all things whatsoever I have commanded you. And behold I am with you all days, even to the consummation of the world.

John 2:5 His mother saith to the waiters: Whatsoever he shall say to you, do ye.

John 15:14 You are my friends, if you do the things that I command you.

and Moses

Exodus 17:9 And Moses said to Josue: Choose out men; and go out and fight against Amalec: tomorrow I will stand on the top of the hill, having the rod of God in my hand.

Hur

Exodus 17:12 And Moses's hands were heavy: so they took a stone, and put under him, and he sat on it: and Aaron and Hur stayed up his hands on both sides. And it came to pass, that his hands were not weary until sunset.

Exodus 24:14 Said to the ancients: Wait ye here till we return to you. You have Aaron and Hur with you: if any question shall arise, you shall refer it to them.