And Moses said to Joshua, Choose us out men, and go out, fight with Amalek: to-morrow I will stand on the top of the hill with the rod of God in my hand.

Call to me, and I will answer thee, and show thee great and mighty things, which thou knowest not.

Then

I have wounded them that they were not able to rise: they have fallen under my feet.

When the wicked, even my enemies and my foes, came upon me to eat up my flesh, they stumbled and fell.

As soon then as he had said to them, I am he, they went backward, and fell to the ground.

For

The LORD of hosts is with us; the God of Jacob is our refuge. Selah.

Associate yourselves, O ye people, and ye shall be broken in pieces; and give ear, all ye of far countries: gird yourselves, and ye shall be broken in pieces; gird yourselves, and ye shall be broken in pieces.

What shall we then say to these things? If God is for us, who can be against us?

General references

And it came to pass, when Moses held up his hand, that Israel prevailed: and when he let down his hand, Amalek prevailed.