Has the Watchtower claimed to be a prophet of God or mediator between man and God ? YES ! Here's the proof !
As you read these Watchtower claims below, remember a prophet is someone who is CHOSEN by God to reveal His Word.... not by reading scripture but by supernatural revelation BEFORE its written as scripture.
1. No man can properly interpret prophecy, and the Lord sends his angels to transmit correct information to his people." Watchtower 1936 Feb 15 p.52
2. Jehovah God has made known to his anointed ones in advance what these Scriptures mean." Watchtower 1931 Jun 1 p.160 -"
3...commissioned to serve as the mouthpiece and active agent of Jehovah … commission to speak as a prophet in the name of Jehovah…" The Nations Shall Know that I am Jehovah" - How? pp.58,62
4. "The Watchtower is a magazine without equal in the earth …. This is not giving any credit to the magazine's publishers, but is due to the great Author of the Bible with it truths and prophecies, and who now interprets its prophecies." Watchtower 1943 Apr 15 p.127
5. So, does Jehovah have a prophet to help them, to warn them of dangers and to declare things to come? These questions can be answered in the affirmative. Who is this prophet? ...This 'prophet' was not one man, but was a body of men and women. It was the small group of footstep followers of Jesus Christ, known at that time as International Bible Students. Today they are known as Jehovah's Christian witnesses... Of course, it is easy to say that this group acts as a 'prophet' of God. It is another thing to prove it. The only way that this can be done is to review the record. What does it show? “(The Watchtower, 4-1-72, p. 197).
6. Of course, it is easy to say that this group acts as a "prophet" of God. It is another thing to prove it. The only way that this can be done is to review the record. Thus this group of anointed followers of Jesus Christ, doing a work in Christendom paralleling Ezekiel's work among the Jews, were manifestly the modern-day Ezekiel, the "prophet" commissioned by Jehovah to declare the good news of God's Messianic kingdom and to give warning to Christendom." Watchtower 1972 Apr 1 pp.197-199
7. 'They Shall Know that a Prophet Was Among Them' "This was the test - the coming down of fire; and the fulfillment exactly on time has proved that Pastor Russell was one of God's great reformers and prophets." Watchtower 1919 Oct 1 p.297
8. "For an answer, people should listen to the plain preaching by the remnant prefigured by Jeremiah, for these preach to men the present-day fulfillment of Jeremiah's prophecies. Who made them a prophet to speak with the authority that they claim? Well, who made Jeremiah a prophet?" Watchtower 1959 Jan 15 pp.39-41
9 … commission to speak as a "prophet" in His name…" Watchtower 1972 Mar 15 p.189
Now we know the Watchtower has claimed to be both prophet and mediator ( 1 Timothy 2:5) between man and God and their own books prove this ! ( END OF THE WATCHTOWERS CLAIMS OF BEING A PROPHET OF GOD ). Watchtowers claim of being a prophet has been proven. Now continuing...
How do we determine who is a true prophet and who is a false prophet ? Read Deut:18:18-22 and Jer:29:8-9 Now ask yourself " Should I take heed anything a false prophet tells me"? Of course not ! Is the Watchtower a false prophet? Remember it only takes one lie to make a one liar, one murder to make one a murderer, on theft to make one a theif. So how many false prophecies does it take to make one a false prophet ? JUST ONE ! ... but here are a HUNDRED false Watchtower prophecies !
www.bible.ca/Jw-Prophecy.htm

http://www.truthnet.org/Christianity/cults/Jehovahwitnessesfalseprophecies.html
Watchtowers false prophecies have been exposed.
The Watchtower says in its July 15th, 2011 page 24 edition " We need to obey the faithful and discreet slave to have Jehovahs approval. / This is called " brainwashing " . Jesus did not come to make us a slave to the discreet slave ( Watchtower ) but he came to free us from such people. Jn:8:36 If the Son therefore shall make you free, ye shall be free indeed. Good luck on your journey with God !
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How to determine a prophet and what to do with false prophets
Deut 18:20 But the prophet, which shall presume to speak a word in my name, which I have not commanded him to speak, or that shall speak in the name of other gods, even that prophet shall die.
Deut 18:21 And if thou say in thine heart, How shall we know the word which the LORD hath not spoken?
Deut 18:22 when a prophet speaks in the name of the Lord, if the thing does not happen or come to pass, that is the thing which the Lord has not spoken; the prophet has spoken it presumptuously; you shall not be afraid ( RESPECT/ LISTEN TO / REGARD AS TRUTH) of him.
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Now for some very evil and demented claims from the Watchtower.
Published in the Watchtower April 1, 1988 Page 18. The " Great Crowd" of true Christians today do not need to be born again, since their hope of everlasting life is earthly , not heavenly. / In The Watchtower November 15, 1954 Page 682- Today a great crowd of these " other sheep" has been gathered into Jehovahs New World Society. A great crowd which no man can number out of all tribes nations and tongues. This great crowd of people are not born again nor do they need to be born again because the gain everlasting life on earth./ End
This is the heresy the Watchtower teaches. They teach only a certain number ( 144000) go to heaven ( who are born again ) and all others ( who do not need to be born again ) live on Earth.
Wheres what Jesus says in John 3:3- "Jesus answered and said to him, 'Truly, truly, I say to you, unless one is born again, he cannot see the kingdom of God'".
So many doctrines of devils (1 Timothy 4:1 )taught by the Watchtower noone knows the number.

Stay away from the Watchtower and Jehovah Witnesses !