“Nevertheless I tell you the truth; It is expedient for you that I go away: for if I go not away, the Comforter will not come unto you; but if I depart, I will send him unto you. And when he is come, he will reprove the world of sin, and of righteousness, and of judgment: Of sin, because they believe not on me; Of righteousness, because I go to my Father, and ye see me no more; Of judgment, because the prince of this world is judged. I have yet many things to say unto you, but ye cannot bear them now. Howbeit when he, the Spirit of truth, is come, he will guide you into all truth: for he shall not speak of himself; but whatsoever he shall hear, that shall he speak: and he will shew you things to come. He shall glorify me: for he shall receive of mine, and shall shew it unto you.” 
Christianity believes that this is a prophesy found in the Bible which is only referring to the Holy Ghost. However, by looking at this prophesy with an unbiased point of view one could come to realise the Holy Ghost wouldn’t be the best candidate. A Muslim may argue that prophet Muhammad (pbuh) is a better candidate for the prophesy than the Holy Ghost. As a Muslim, my intention of this writing is to prove to that the Holy Ghost is not the absolute perfect identity for the comforter prophesised in the Bible; rather the last and final Prophet Muhammad (pbuh) qualifies much better.
Though in John 14:26 of the Bible we read “But the Comforter, which is the Holy Ghost, whom the Father will send in my name, he shall teach you all things, and bring all things to your remembrance, whatsoever I have said unto you”. This is a popular verse in such arguments regarding the Comforter. The verse clearly confirms the identity of the Comforter to be the Holy Ghost. But by accepting this verse one would find many contradictions in the Bible regarding the idea of the Comforter being the Holy Ghost. Throughout this article such contradictions in the Bible will be brought to the reader’s attention.
Spirit or prophet?
A learned Christian may point out that the phrase ‘the Comforter’ is used synonymously with the phrase ‘Spirit of Truth’ in this prophesy, the key word being ‘spirit’. So Muhammad (pbuh) could not be the comforter simply because he was a complete man, not a spirit. This is a logical argument, but there is reply to this from the very Bible itself. We read: “Beloved, believe not every spirit, but try the spirit whether they are of God: because many false prophets are gone out into the world”. In this passage, the word ‘Spirit’ is used synonymously with the word ‘Prophet’. So now, this allows us to understand that the Holy Ghost is not the only candidate for the prophesy, Muhammad (pbuh) could also be a potential candidate.
If I don’t go, he won’t come
“Nevertheless I tell you the truth; It is expedient for you that I go away: for if I go not away, the Comforter will not come unto you; but if I depart, I will send him unto you.”
Here we learn that the Comforter (also the Spirit of truth) will not come if Jesus (pbuh) doesn’t depart. This means that the Comforter was not present at the time of Jesus (pbuh). If the Holy Ghost is what the prophesy is referring to, then it doesn’t make sense. We read: “And it came to pass, that, when Elisabeth heard the salutation of Mary, the babe leaped in her womb; and Elisabeth was filled with the Holy Ghost.”. And in John 20:22, we read: “And when he had said this, he (Jesus) breathed on them, and saith unto them, Receive ye the Holy Ghost:”. These passages indicate that the Holy Ghost was already present at the time of Jesus (pbuh). So the Idea of the Comforter being the Holy Ghost is already thrown out of the window, because John 16:7 points out that the Comforter cannot be present if Jesus (pbuh) doesn’t depart.
He will guide you into all truth
“I have yet many things to say unto you, but ye cannot bear them now. Howbeit when he, the Spirit of truth, is come, he will guide you into all truth: for he shall not speak of himself; but whatsoever he shall hear, that shall he speak: and he will shew you things to come. He shall glorify me: for he shall receive of mine, and shall shew it unto you.”
Jesus (pbuh) said according to the Bible: “I have yet many things to say unto you, but ye cannot bear them now.” Meaning: God had given Jesus (pbuh) guidance to guide his people till the end of the world, but his followers at the time were not fit to receive the message. Jesus (pbuh) continued by saying “Howbeit when he, the Spirit of truth, is come, he will guide you into all truth”. In other words: when the Spirit of Truth (comforter) arrives, he shall provide solutions to all the problems of mankind.
If the comforter or Spirit of truth is supposed to be the Holy Ghost, then surely it is logical to ask: what guidance has the Holy Ghost given in two thousand years which Jesus (pbuh) hasn’t already given? What solutions have been passed on from the Holy Ghost in two thousand years, to problems such as racism, alcoholism, extremism, terrorism, poverty etc, which Jesus (pbuh) hasn’t already provided? There are so many influential Christians who claim to have the Holy Ghost helping them, but in so many years not one has been able to provide a solution to a problem and say: the Holy Ghost has provided him/her with this solution.
By studying the life of the holy prophet Muhammad (pbuh) and the scripture given unto him (the holy Qur’an), one would come to realise that the prophesy made in the Bible about the coming of the comforter fits no one better than Muhammad (pbuh). Because, he the last and final prophet provided the solutions and guidance to all the problems which mankind needed and still needs (by Allah’s will). One can argue against this and not accept the Comforter being the prophet Muhammad (pbuh), but that does not validate the idea of the Holy Ghost being the Comforter, because there are many contradictions in the Bible if such an idea is accepted. Those who are curious by this topic of (the prophesied Comforter), are recommended to study Muhammad’s (pbuh) life style and mission and ponder how closely the characteristics and qualities of the Comforter prophesied in the Bible relate to the holy Prophet Muhammad (pbuh) which Muslims worldwide regard most dearly and revere.
 Bible: John 16:7-14
 1 John 4:1
 John 16:7
 Luke 1:41
 John 16:12-14
 John 16:12