And Moses said to Joshua, Get together a band of men for us and go out, make war on Amalek: tomorrow I will take my place on the top of the hill with the rod of God in my hand.

Let your cry come to me, and I will give you an answer, and let you see great things and secret things of which you had no knowledge.

Then

I will give them wounds, so that they are not able to get up: they are stretched under my feet.

When evil-doers, even my haters, came on me to put an end to me, they were broken and put to shame.

And when he said to them, I am he, they went back, falling to the earth.

For

The Lord of armies is with us; the God of Jacob is our high tower. (Selah.)

Have knowledge, O peoples, and be in fear; give ear, all you far-off parts of the earth:

What may we say about these things? If God is for us, who is against us?

General references

Now while Moses' hand was lifted up, Israel was the stronger: but when he let his hand go down, Amalek became the stronger.