The Book of Zohar, “Beha’alotcha” Item 88: And the wise shall shine as the brightness of the “firmament” are the authors of the Kabbalah. They are the ones who exert in this brightness, called The Book of Zohar.
This is speaking of those who are striving to enter into The Book of Zohar, and this book is of equal value for all generations because it was written from the height of the completion of correction in comparison to all the rest of the books of Kabbalah. Baal HaSulam also attained the completion of correction, and therefore he was able to write a complete commentary for The Book of Zohar.
Therefore, The Book of Zohar belongs to all generations and every person who is involved and learns with it becomes an “man of Light,” meaning that he begins to shine like the brilliance of the firmament. In other words, his characteristics are changed so that the Upper Light begins to be radiated through him.
From the World Zohar Convention 2/5/14, Lesson 1