While people debate whether Paul meant what he said in 1 Corinthians 13:8, that fact remains that he did say that three SPECIFIC spiritual gifts would cease (vanish away) -- prophecies, tongues, and supernatural knowledge (since ordinary knowledge has always existed).
Charity never faileth: but whether there be prophecies, they shall fail; whether there be tongues, they shall cease; whether there be knowledge, it shall vanish away.
Many people try to claim that this will happen only at the Rapture, but if that were true there would be no need to pick three specific gifts. All spiritual gifts would become unnecessary at the Resurrection/Rapture, since all the saints would be perfected at that time (and the gifts are given for the edification and perfection of the saints. See Ephesians 4)
So that argument has no merit. Furthermore, Paul said "when that which is perfect (complete) is come" NOT "when He who is perfect has come", those gifts would disappear.
Several translations have used the word complete rather than perfect, since the Greek word τέλειος (teleios) can mean either perfect or complete (depending on context). And the Bible was completed in 96 AD.
So when properly interpreted, what Paul was saying is that when the Bible has been completed, then prophecies, tongues, and supernatural knowledge would cease. And that makes perfect sense in light of the fact the the apostle John warned in the last chapter of the last book of the Bible, that nothing more was to be added to his prophecies in Revelation. Tongues would be *prophetic* in the sense that they were the supernatural speaking of foreign languages not learned by the speaker (unlike moder tongues or glossolalia).
The truth of this is found in the writings of the Early Church Fathers, who never claimed to be apostles and prophets, and always made a clear distinction between their writings and those of the apostles. They said nothing about speaking in tongues either. Indeed Peter says that what he and the other apostles wrote was prophetic in that it was divinely inspired -- the Word of God -- which is the true biblical meaning of prophecy (foretelling as well as forth-telling). Nothing written by the ECF was prophetic.
Charismatics hate this argument from Scripture, and insist that all the spiritual gifts have continued to this day. But that is simply not the case. Those who have claimed to be prophets have been found to be false prophets (e.g. Ellen G. White, Joseph Smith, etc).
As to signs, wonders, and miracles (through miracle workers) they were primarily for the apostles and their companions, in order to authenticate the Gospel message and show unbelieving Jews (primarily) that the Gospel of Jesus Christ was directly from God.
HEBREWS 2: GOD BEARING WITNESS THROUGH MIRACLES
1 Therefore we ought to give the more earnest heed to the things which we have heard, lest at any time we should let them slip. 2 For if the word spoken by angels was stedfast, and every transgression and disobedience received a just recompence of reward; 3 How shall we escape, if we neglect so great salvation; which at the first began to be spoken by the Lord, and was confirmed unto us by them that heard him; 4 God also bearing them witness, both with signs and wonders, and with divers miracles, and gifts of the Holy Ghost, according to his own will?
Today miracles occur in answer to prayers, not to prove that the Gospel is from God, and not to dazzle unbelievers either. For we walk by faith, not by sight. Christ said that the Jews always seek after a sign, but His resurrection (the sign of Jonah) would be the only sign to an unbelieving generation. Jesus also said regarding unbelieving Jews that they would not repent even though one rose from the dead. Which is true to this day.