What is the definition of a prophet?

 It so happens some time that the people try to ascribe certain meanings to their faith which is not supported by the their holy book. In that way they try to be an advocate of something which is not in the book. That means they are cleverer than the book. The book is quiet and does not make any claim but the people try to make the claim being wiser than their own book.

 Every claim must be supported by the book and the reasons for the claim should also be given from the original book. Not from one self.

That applies to all religions and their books, The Quran, The Bible OT and NT, etc.

 I wanted to present a few words on the topic. A prophet is a chosen man of God to whom Allah reveals some message (news of the unseen). This message is sometime in spoken words, sometime in written words shown in a dream. That is called Wahi (revelation). The quality and quantity of the Wahi of a prophet is always  high. It is not necessary for a prophet to bring any new law (Shariyat). In special cases, the spoken words forms the part of a book of law. That type of Wahi has been stopped and no new person will come with any new law.

But other forms of Wahi are still allowed. They may contain good or bad news only. The prophet s.a.w.s. had said," There is nothing left pf the Nabuwwat except the Mubashshirat." The Sahabah asked Huzoor, "What is meant by Mubashshirat?"

The prophet said " Visions", meaning true dreams only.

 O.K. Good. Please let us know what bible says about what prophet is. Thanks. Please be accurate and tell it from the Bible OT only with proper reference so that we may also check it up.

Andulus,

Answers to you questions.

How do you derive 70 weeks? 490 years?

As Imentioned before. We are told, that 1 week is equal to 7 years. There are 7 days in the week. 1 day equals one year. So we then take 7 and times that by 70 and get 490 years (the prophecy is 70 weeks wich is equal to 490 years)

The year 457 as a decree to rebuild Jerusalem?

We get this date because it's the last date at which the decree was given to rebuild the temple (Artaxerxes gave the last decree and Cyprus made it happen)

What is 483 years?

This is when the prophecy gets to the 69th week. This is from the time the decree was given until the temple was rebuilt.

How do you arrive at Jesus being crucified at 31 CE? How do you get from 457 BCE to 31 CE?

From the time the decree was given in 457 BC to when the temple was built the prophecy states that Messiah the Prince. How do we get to the date 31? We are toldin the Bible who was in power during those times and then we just look at history. For example, we know that Pontius Pilate was a Roman governor during Jesus's time.

Please don't forget to read the Book of Daniel. Let me know if you've read any part of it yet and then we can discuss.