Yechezchial 29:9

⁹ והיתה ארץ מצרים לשממה וחרבה וידעו כי אני יהוה יען אמר יאר לי ואני עשיתי׃

Book written within and on the back

In Revelation 5:1, this signifies the states of all people in heaven (within) and on earth (on the back). (Apocalypse Explained 299)

¹ You, son of man, take a sharp sword; You shall take it as a barber's razor to you, and shall cause it to pass on your head and on your beard: then take balances to weigh, and divide the hair.