Hello edu :
a little about the claims written on the antiquity of the zohar :
alot of scholars today believe the zohar was written around circa 13th century . but In fact some scholarly works proved very clearly that we have an ancient text . for exemple , a good place to start would be the article by rabbi Menachem Mendel Kasher alav hashalom , called "the zohar" (hazohar) , sinay ,sefer ha yovel , rabbi Kook institute ,jerusalem . i dont know of english transalation of the article but here is a link for the article in hebrew :
http://www.daat.ac.il/daat/kitveyet/sinay/hazohar-2.htmhowever here is a sum of his arguements for the antiquity of the zohar in general ,copied from wikipedia(and some other intresting points against those who adhere the idea that its a new book ):
"
Arguments for an earlier dating
Rabbi Menachem Mendel Kasher attempts to refute many of Scholem's points. He writes:
* 1. Many statements in the works of the Rishonim (medieval commentors who preceded De Leon refer to Medrashim of which we are not aware. He writes that these are in fact references to the Zohar. This has also been pointed out by R' David Luria in his work "Kadmus Sefer Ha'Zohar."
* 2. The Zohar's major opponent Elijah Delmedigo refers to the Zohar as having existed for only 300 years. Even he agrees that it was extant before the time of R' Moses De Leon.
* 3. He cites a document from R' Yitchok M' Acco who was sent by the Ramban to investigate the Zohar. The document brings witnesses that attest to the existence of the manuscript.
* 4. It is impossible to accept that R' Moshe De Leon managed to forge a work of the scope of the Zohar (1700 pages) within a period of six years as Scholem claims.
* 5. A comparison between the Zohar and De Leon's other works show major stylistic differences. Although he made use of his manuscript of the Zohar, many ideas presented in his works contradict or ignore ideas mentioned in the Zohar. (Luria also points this out)
* 6. Many of the Midrashic works achieved their final redaction in the Geonic period. Some of the anachronistic terminology of the Zohar may date from that time.
* 7. Out of the thousands of words used in the Zohar Scholem finds two anachronistic terms and nine cases of ungrammatical usage of words. This proves that the majority of the Zohar was written within the accepted time frame and only a small amount was added later (in the Geonic period as mentioned).
* 8. Some hard to understand terms may be attributed to acronyms or codes. He finds corrolaries to such a practice in other ancient manuscripts.
* 9. The "borrowings" from medieval commentaries may be explained in a simple manner. It is not unheard of that a note written on the side of a text should on later copying be added into the main part of the text. The Talmud itself has Geonic additions from such a cause. Certainly this would apply to the Zohar to which there did not exist other manuscripts to compare it with.
* 10. He cites an ancient manuscript that refers to a book Sod Gadol that seems to in fact be the Zohar.[15]
Concerning the Zohars' lack of knowledge of the land of Israel, Scholem bases this on the many references to a city Kaputkia (Cappadocia) which he states was situated in Turkey not in Israel. However, Rabbi Reuvein Margolies (Peninim U' Margolies) states that in an ancient Israeli tombstone there is mentioned a village Kaputkia. In addition, the Zohar states that this village was sitiuated within a day's walk, which would imply that the author of the Zohar had precise knowledge of the geography of Israel.
As to the references in the book to historical events of the post-Talmudic period, it was not deemed surprising that Shimon ben Yochai should have foretold future happenings."