Deuteronomy 25?
Quote:
Remember what the Amalekites did to you along the way when you came out of Egypt. When you were weary and worn out, they met you on your journey and cut off all who were lagging behind; they had no fear of God. When the Lord your God gives you rest from all the enemies around you in the land he is giving you to possess as an inheritance, you shall blot out the memory of Amalek from under heaven. Do not forget!
"Remember what the Amalekites did to you" apparently refers to
Quote:
The Amalekites came and attacked the Israelites at Rephidim. Moses said to Joshua, “Choose some of our men and go out to fight the Amalekites. Tomorrow I will stand on top of the hill with the staff of God in my hands.” So Joshua fought the Amalekites as Moses had ordered, and Moses, Aaron and Hur went to the top of the hill. As long as Moses held up his hands, the Israelites were winning, but whenever he lowered his hands, the Amalekites were winning. When Moses’ hands grew tired, they took a stone and put it under him and he sat on it. Aaron and Hur held his hands up—one on one side, one on the other—so that his hands remained steady till sunset. So Joshua overcame the Amalekite army with the sword.
Then the Lord said to Moses, “Write this on a scroll as something to be remembered and make sure that Joshua hears it, because I will completely blot out the memory of Amalek from under heaven.”
Moses built an altar and called it The Lord is my Banner. He said, “For hands were lifted up to the throne of the Lord. Thec Lord will be at war against the Amalekites from generation to generation.”
The Lord didn't quite "blot out the memory of Amalek from under heaven": Amalek is still mentioned in the Bible of all places.
Moreover, blotting out their memory would be inconsistent with "Do Not Forget!"