'Blot' in the Bible

And Jehovah said unto Moses, Write this for a memorial in a book, and rehearse it in the ears of Joshua: that I will utterly blot out the remembrance of Amalek from under heaven.

Yet now, if thou wilt forgive their sin-; and if not, blot me, I pray thee, out of thy book which thou hast written.

And Jehovah said unto Moses, Whosoever hath sinned against me, him will I blot out of my book.