Link, below is the verse proof you asked for. In 1 Cor. 13 the Greek word for cease is "Pauo". It is in the middle voice and literally means "will stop by themselves". Prophecy and knowledge have a different verb and it means that something will happen to make them end. The Holy Spirit wanted us to know that tongues will fade away on their own. In 1 Cor. 14: 20-22 Paul tells the readers (struggling Corinthians) to be men in their understanding. That is because they were all messed up on what tongues were and everyone was trying to speak in tongues. Paul continues by quoting Isaiah and then with "wherefore" he connects verses 21 and 22 to one thought. That thought being that Tongues are a sign of Judgement to Isreal. Isreal has to be the "them that believe not" because in 50ad when this was written the Gospel was mostly being rejected by a big portion of the nation of Isreal, which was why Paul's mission field was the Gentiles. Plus 21 and 22 are one thought so there is nother way to read it. Paul quotes Isaiaih 28 which directly says "with men of other TONGUES". Now look at the quote below from Isaiah 28 it uses the word Judgement a couple times and is all about the destruction of Jerrusalem. Not the death of the people so much but the loss of a covenant and a fall of what they had known. In 70AD Jerusalem was overtaken and the people of Isreal scattered and therefore the judgement of destruction was fulfilled. The need for the "sign" of tongues, which Paul said, not me, would then be eliminated. You never need a sign that points to something after the fact. That would be like putting a "danger ahead" road sign after the danger. After 70AD tongues was no longer given as a gift and so it just quietly faded away as Paul said that it would.
Well, that was short and sweet but I hope it satisfied what you wanted.
Isaiah 28:
[5] In that day shall the LORD of hosts be for a crown of glory, and for a diadem of beauty, unto the residue of his people,
[6] And for a spirit of judgment to him that sitteth in judgment, and for strength to them that turn the battle to the gate.
[7] But they also have erred through wine, and through strong drink are out of the way; the priest and the prophet have erred through strong drink, they are swallowed up of wine, they are out of the way through strong drink; they err in vision, they stumble in judgment.
[8] For all tables are full of vomit and filthiness, so that there is no place clean.
[9] Whom shall he teach knowledge? and whom shall he make to understand doctrine? them that are weaned from the milk, and drawn from the breasts.
[10] For precept must be upon precept, precept upon precept; line upon line, line upon line; here a little, and there a little:
[11] For with stammering lips and another tongue will he speak to this people.
[12] To whom he said, This is the rest wherewith ye may cause the weary to rest; and this is the refreshing: yet they would not hear.
[13] But the word of the LORD was unto them precept upon precept, precept upon precept; line upon line, line upon line; here a little, and there a little; that they might go, and fall backward, and be broken, and snared, and taken.
[14] Wherefore hear the word of the LORD, ye scornful men, that rule this people which is in Jerusalem.
[15] Because ye have said, We have made a covenant with death, and with hell are we at agreement; when the overflowing scourge shall pass through, it shall not come unto us: for we have made lies our refuge, and under falsehood have we hid ourselves:
[16] Therefore thus saith the Lord GOD, Behold, I lay in Zion for a foundation a stone, a tried stone, a precious corner stone, a sure foundation: he that believeth shall not make haste.
[17] Judgment also will I lay to the line, and righteousness to the plummet: and the hail shall sweep away the refuge of lies, and the waters shall overflow the hiding place.
[18] And your covenant with death shall be disannulled, and your agreement with hell shall not stand; when the overflowing scourge shall pass through, then ye shall be trodden down by it.
[19] From the time that it goeth forth it shall take you: for morning by morning shall it pass over, by day and by night: and it shall be a vexation only to understand the report.
1 Cor. 13:
[8] 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.
1 Cor. 14:
20] Brethren, be not children in understanding: howbeit in malice be ye children, but in understanding be men.
[21] In the law it is written, With men of other tongues and other lips will I speak unto this people; and yet for all that will they not hear me, saith the Lord.
[22] Wherefore tongues are for a sign, not to them that believe, but to them that believe not: but prophesying serveth not for them that believe not, but for them which believe.
In Christ,
Brian
Well, that was short and sweet but I hope it satisfied what you wanted.
Isaiah 28:
[5] In that day shall the LORD of hosts be for a crown of glory, and for a diadem of beauty, unto the residue of his people,
[6] And for a spirit of judgment to him that sitteth in judgment, and for strength to them that turn the battle to the gate.
[7] But they also have erred through wine, and through strong drink are out of the way; the priest and the prophet have erred through strong drink, they are swallowed up of wine, they are out of the way through strong drink; they err in vision, they stumble in judgment.
[8] For all tables are full of vomit and filthiness, so that there is no place clean.
[9] Whom shall he teach knowledge? and whom shall he make to understand doctrine? them that are weaned from the milk, and drawn from the breasts.
[10] For precept must be upon precept, precept upon precept; line upon line, line upon line; here a little, and there a little:
[11] For with stammering lips and another tongue will he speak to this people.
[12] To whom he said, This is the rest wherewith ye may cause the weary to rest; and this is the refreshing: yet they would not hear.
[13] But the word of the LORD was unto them precept upon precept, precept upon precept; line upon line, line upon line; here a little, and there a little; that they might go, and fall backward, and be broken, and snared, and taken.
[14] Wherefore hear the word of the LORD, ye scornful men, that rule this people which is in Jerusalem.
[15] Because ye have said, We have made a covenant with death, and with hell are we at agreement; when the overflowing scourge shall pass through, it shall not come unto us: for we have made lies our refuge, and under falsehood have we hid ourselves:
[16] Therefore thus saith the Lord GOD, Behold, I lay in Zion for a foundation a stone, a tried stone, a precious corner stone, a sure foundation: he that believeth shall not make haste.
[17] Judgment also will I lay to the line, and righteousness to the plummet: and the hail shall sweep away the refuge of lies, and the waters shall overflow the hiding place.
[18] And your covenant with death shall be disannulled, and your agreement with hell shall not stand; when the overflowing scourge shall pass through, then ye shall be trodden down by it.
[19] From the time that it goeth forth it shall take you: for morning by morning shall it pass over, by day and by night: and it shall be a vexation only to understand the report.
1 Cor. 13:
[8] 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.
1 Cor. 14:
20] Brethren, be not children in understanding: howbeit in malice be ye children, but in understanding be men.
[21] In the law it is written, With men of other tongues and other lips will I speak unto this people; and yet for all that will they not hear me, saith the Lord.
[22] Wherefore tongues are for a sign, not to them that believe, but to them that believe not: but prophesying serveth not for them that believe not, but for them which believe.
In Christ,
Brian