Remember what Amalek did unto thee,.... The Amalekites, how they came out against them, and fought with them at Rephidim, Exo 17:8, by the way, when ye were come forth out of Egypt; which was an aggravation of their cruel and inhuman action, that they not only came out against them unprovoked, were the aggressors, and fell upon them as they were travelling on the road, but when they were just come out of Egypt, where they had been in hard bondage, and their spirits broken, and they not used to war; and so took them at all these disadvantages, a people that had not in the least injured them.