(Exodus 17:14) "For erase shall I erase": "erase" — in this world; "shall I erase" — in the world to come. "the remembrance" — Haman; "Amalek" — as stated. Variantly: "erase" — him and his descendants; "shall I erase" — him and his families. These are the words of R. Yehoshua.
Why Does God Use the Verb Twice, Erase and Then Shall I Erase
Mekhilta Tractate Amalek 2:36