The Zohar, Chapter “Tazria (When A Woman Delivers),” Item 162: “A single witness shall not rise up against a man on account of any iniquity or any sin…on the evidence of two witnesses.”
We have to take into consideration that the language of The Zohar is not always smooth. This book came to us after being collected from detached pages. Sometimes it lacks certain chapters and there are many unfinished sentences. Often Baal HaSulam replenishes it with comments saying that some content is omitted or that there is no connection between its parts.
Nevertheless, by no means can we change anything in it, even though it is obvious that the text was compiled of the pieces that were available. What we consider to be The Book of Zohar is actually a very small part of what was originally written.
On the other hand, we should understand that this fact doesn’t reduce the book’s strength or ability to deliver the Light to us. The fact that we have this book in its current form means that it is exactly what we need for the correction of our souls. The language of the book is not always clear and we come across vague portions of phrases in many places. This is proof of the authenticity of its text.