'Blot' in the Bible

Yahweh said to Moses, "Write this for a memorial in a book, and rehearse it in the ears of Joshua: that I will utterly blot out the memory of Amalek from under the sky."

Yet now, if you will, forgive their sin -- and if not, please blot me out of your book which you have written."

Yahweh said to Moses, "Whoever has sinned against me, him will I blot out of my book.