Muslims claim that the Paraclete (“Helper” or “Comforter” or “Counselor”) of John 14 and 16 is a prophesy of Muhammad, the prophet of Islam, who was born around 570 AD and started having visions and dreams around 610 AD, and started preaching Monotheism in Arabia around 613 AD.
Problem is that there is absolutely no evidence of any textual variants or corruption of the Paraclete passages in John 14 and 16. It is impossible for it to have been about Muhammad, since it is about a Spirit, not a human being, who will live in the disciples of Jesus. The human Muhammad comes 600 years later; so it makes it totally impossible to be about Muhammad.
16 I will ask the Father, and He will give you another Helper, that He may be with you forever;
17 that is the Spirit of truth, whom the world cannot receive, because it does not see Him or know Him, but you know Him because He abides with you and will be in you.
See article by Ryan Turner at CARM:
“First, there is absolutely no ancient textual evidence among all of the over 5,600 Greek manuscripts to place the word periclytos (“praised one”) in place of paraclete (“helper”).
2 For a Muslim to argue that the correct reading should be periclytos instead of paraclete, shows his lack of understanding of the actual Greek text and the reliability of the copying of the New Testament.
Second, in the same passage, Jesus explicitly identified the “Helper” as the Holy Spirit: “But the Helper, the Holy Spirit, whom the Father will send, will teach you,” (John 14:26). Therefore, with all due respect, the Muslim argument is already defeated. Third, this “Helper” was given to Jesus’ apostles (the “you” in John 14:16) not to Arabs living over 550 years later! It was given to those who “have been with . . . [him] from the beginning” (John 15:27; cf. Acts 1:22; Luke 1:1-2). However, Muhammad was not one of Jesus’ apostles.
Fourth, this “Helper” was to abide with them “forever” (John 16), but Muhammad has been dead for over thirteen centuries! Fifth, Jesus told the disciples, “You know Him [the Helper]” (v. 17), but the apostles did not know Muhammad. He was not born until over 500 years later! Sixth, Jesus also told the disciples that the Helper would be “in you” (v. 17). How Muhammad could be “in” the disciples stretches all credibility. This reference of being “in” the disciples clearly is a reference to the Holy Spirit’s role of dwelling inside believers as the context of John (John 14:16-26) and the rest of the New Testament (Ephesians 1:13; 4:30) indicates.
Seventh, Jesus said that the Helper would be sent “in My [Jesus’] name” (John 14:26). However, no Muslim believes that Muhammad was sent in Jesus’ name. Eighth, the Helper whom Jesus would send would not “speak on His own authority” (John 16:13). However, Muhammad constantly testifies of himself. For example, in Surah 33:40, Muhammad says of himself, “Muhammad is . . . The Apostle of God, And the Seal of the Prophets.” Ninth, the Helper would “glorify” Jesus (John 16:14). How would Muhammad actually be glorifying Jesus if Muhammad is the last (and the sealer) of the prophets? He really would not be “glorifying” an earlier, inferior prophet like Jesus.
Tenth, and finally, Jesus said that the Helper would come in “not many days” (Acts 1:5), but Muhammad did not come for almost 600 years! Since the Helper is the Holy Spirit, He did come merely 40 days later (Acts 1:5; 2:1ff).
Therefore, given the above evidence, the Holy Spirit clearly is the Helper in John 14:16, not Muhammad.”
by Ryan Turner at CARM
There is no evidence of any Greek word periclytos – περικλυτος
rather all Greek manuscripts have:
paraklaetos – παρακλητος
No one altered any meaning of the text.