Yet now, if Thou wilt forgive their sin - ; and if not, blot me, I pray Thee, out of Thy book which Thou hast written.
Moses was so upset at the people of Israel because they had so quickly turned to idolatry that he appeals to God to blot out or erase his name from God’s book if their sin could not be forgiven. But God’s response was that it would only be those who had sinned who would be erased - not Moses. Moses’ name could not be erased. He had been a faithful believer and follower of God and his future was secure in God’s book.