if it is said that the comforter was promised to the immediate disciples of jesus (pbuh) and not to a people six hundred years later:
and he (god) shall give you another comforter, that he may abide with you for ever.
(holy bible) john 14:16
surprisingly, the christian sees no difficulty in justifying the fulfilment of prophecies "since the world began," 1 and after over a millennium2 when peter in his second sermon to the jews, reminds them:
for moses truly said unto the fathers, a prophet shall the lord your god raise up unto you of your brethren, like unto me; him shall ye hear in all things what-soever he shall say unto you.
(holy bible) acts 3: 22
all these "ye, you and yours" are from the book of deuteronomy, chapter 18, 3 when moses (pbuh) addressed his people and not the jews at the time of peter, thirteen hundred years later. the gospel writers have put the same compromising words in the mouth of their master which are begging for fulfilment for two thousand years. i think just one example will suffice:
but when they persecute you in this city, flee ye into another: for verily (most assuredly) i (jesus) say unto you, ye shall not have gone over the cities of israel till the son of man (jesus) be come.
(holy bible) matthew 10:
1. acts 3:21
2. millennium: a thousand years
3. for an elaboration on this prophecy, see "what the bible says about muhummed (pbuh)"