Amalek came and attacked Israel in Rephidim.

After they journeyed from Rephidim, they came to the Desert of Sinai, and they camped in the desert; Israel camped there in front of the mountain.

The whole community of the Israelites traveled on their journey from the Desert of Sin according to the Lord’s instruction, and they pitched camp in Rephidim. Now there was no water for the people to drink.