Which verse? And how is that affecting the Islamic theology? Please explain.
I will explain why I believe it is important, but it would be long. Do you know how and why and when the Muslims started to think the Bible is corrupted or is not really the Revelations to Moses and Jesus?
It was when the Muslims were unable to find Muhammad in Torah and Gospel. Then they said, it must be because these books are not the true and original books revealed. For that, they referred to verses of Quran that says the people of the Book have changed their books.
But, in our view the reason most Muslims do not see Muhammad in the Bible, is not because Muhammad is not in the Bible, but it is because, the verses in Bible that predicted Muhammad are in the form of Mutishabihaat. You see, it is not like, Allah only spoke in Mutishabihat in the Quran. He did that in Revelations before the Quran too.
Why does Allah speak in Mutishabihaat?
It is because there are certain things that it would be too soon for people to be told explicitly. Even as Jesus said, "I still have many things to say, but you cannot bare it now"
These Mutishabihaat are mainly prophecies about future Messenger. Allah did not want to say explicitly of next Messenger, so, that He sends Him suddenly. In this way, He tests the belief of people.
Consider if God had said explicitly of Jesus in the Torah. Such as His name, and that He will be a Messenger with a new Revelation, and when He will be born, and when He comes. Then the Jews would not have rejected Jesus. Because they could have easily recognized Jesus as described in Torah.
Consider that the Holy Books teach lessons from the past and then God tests humanity from what He taught in the Book. Even as Quran says, God gives Book to humanity so He can tests them!
For example, in the Quran, God speaks of how everytime a Messenger was sent, people rejected Him, disbelieved in Him, and even plotted darkly against the Messengers.
Likewise, in Gospel and Torah, we see same lessons.
You see, the stories that are mentioned about previous Prophets, are not just nice and amusing stories. There is a purpose of narrating the old stories. It's wisdom is to teach a lesson of what people did wrong in old times, so, later people hopefully learn from their mistakes. Even as it is said at the End of Surran of Joseph!
Once these lessons are given, then Allah tests the Ummah, or the community of believers according to the lessons in their Holy Bool. But if Allah had said explicitly that, there will be a Messenger whose name is Muhammad, and He comes in Arabia in the year 620s AD, with a new Book called the Quran, then how was a test? It is like giving the answer to a test before the test! But, the test is to test their belief. So, then Allah sends a Messenger suddenly. For that reason He spoke in Mutishabihaat about future Messenger, because according to His Wisdom, He did not want to make it explicit.