I've addressed this at least twice, but you don't seem to have read (or haven't accepted) the explanation. Those who operate in the gifts/manifestations of the Holy Spirit as described in 1 Cor 12-14 usually aren't seeking "signs". Rather, they are seeking to be obedient to the word Paul wrote by inspiration of the same Holy Spirit. Your conflation of the two is simply incorrect and is an irrelevant canard.
This is different from the first century how exactly? Did Paul work any miracle by his own power? Did Peter, or any of the other apostles? No. They all required the power of the Holy Spirit. I don't think you'll find any otherwise-sound Christian claiming to bring about any miraculous event by his or her own power.
1 Cor 13:8 simply says nothing about miracles or healing. What it does say about prophecy, knowledge and tongues ceasing is tied to the appearance of "the perfect". We disagree on what this is; I contest that it happens at the end of the age; you contest that it happened at the end of the first century, or thereabouts. Your view therefore requires the presumption that all claims to prophecy, tongues or knowledge are automatically false.
No such thing as sign gifts . Signs are for those who rebel against prophecy, the gift .That law is not subject to change
Rodger gave the best answer short and to the point.
John 4:48 Then said Jesus unto him, Except ye see signs and wonders, ye will not believe.
Like a Timex watch all of the spiritual gifts not seen as gifts they keep on going or ticking But the watch is out of view it served its temporal purpose to expose those who refuse to walk by faith after the prophecies of God.. It is hid in parables like at the bottom of the ocean....takes a licking, keeps a ticking (not ceasing but hid)
Like in the parable when the Israelite where first delivered from bondage of Egypt as a picture to us being released from the
gates of hell by the gospel of our salvation into the promised rest in the Promised Land. The Sabbath rest we do enter in whenever we hear His voice and do not harden our hearts in unbelief (no faith)
The signs that led them out, where for those who rebelled against the word of God’s prophecy, the promise to Abraham 400 years earlier drew out God’s people .
And they shall hearken to thy voice: and thou shalt come, thou and the elders of Israel, unto the king of Egypt, “and ye shall say unto him”, The LORD God of the Hebrews hath met with us: and now let us go, we beseech thee, three days' journey into the wilderness, that we may sacrifice to the LORD our God. Exo 3:18
He knew beforehand they would
not let them go by a mighty hand so with signs designed for those who rebel they
will let his people go.
And I am sure that the king of Egypt will not let you go, no, not by a mighty hand.And I will stretch out my hand, and smite Egypt with all my wonders which I will do in the midst thereof: and after that he will let you go. Exo 3:19
( Signs are for those who rebel 1Co 14:22... a law not subject to change)
The purpose was that he would show them what a God of mercy can perform as he had grace on those moved by the prophecy that was given to Abraham four hundred years earlier.
And I will give this people favour in the sight of the Egyptians: and it shall come to pass, that, when ye go, ye shall not go empty. Exo 3:21
Moses response...
And Moses answered and said, But, behold, they will not believe me, nor hearken unto my voice: for they will say, The LORD hath not appeared unto thee. Exo 4:1
Moses is shown for bringing prophecy that the rebels would reject . Moses was used as the voice of God’s prophecy.When they rejected Moses they were rejecting the words of the mouth of God called prophecy
Exo 4:16 And he shall be thy spokesman unto the people: and he shall be, even he shall be to thee instead of a mouth, and thou shalt be to him instead of God.
He doubted and the Lord took him by the hand.
And the LORD said unto him, What is that in thine hand? And he said, A rod.And he said, Cast it on the ground. And he cast it on the ground, and it became a serpent; and Moses fled from before it.And the LORD said unto Moses, Put forth thine hand, and take it by the tail. And he put forth his hand, and caught it, and it became a rod in his hand: That they may believe that the LORD God of their fathers, the God of Abraham, the God of Isaac, and the God of Jacob, hath appeared unto thee.And the LORD said furthermore unto him, Put now thine hand into thy bosom. And he put his hand into his bosom: and when he took it out, behold, his hand was leprous as snow.And he said, Put thine hand into thy bosom again. And he put his hand into his bosom again; and plucked it out of his bosom, and, behold, it was turned again as his other flesh.And it shall come to pass, if they will not believe thee, neither hearken to the voice of the first sign, that they will believe the voice of the latter sign. Exo 4:2
Both signs pointed to those who believe not prophecy (the word of God) The second which represented death to the first born moved the Pharaoh who was enticed by the father of lies the god of this world to let the people go.
The law revealed 1 Corinthians 14 applied then.
Tongues are a sign to those who believe
not prophecy(God’s word) . Not evidence they did believe. That would be turning things upside down. No such thing as I sign gift .It opposes walking by faith (the unseen)
1Co 14:22 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.
How that gets turned upside down by those who require a sign before they believe is a mystery.
After the first century promised reformation when the veil was rent, the shadows and types used in ceremonial laws to preach the gospel beforehand came to an end.
Again to establish the new form of Christian government ( 1 Corinthians 11) God used outward signs of the work he performs for a temporal time period . It was a terrible time for an inward Jew, born again of the Spirit of Christ.
As God used Moses and Arron to move his people out of Egypt he used the temporal outwards signs to establish his new government.
After it was formed it was business as usual, no outward signs.
For as I passed by, and beheld your devotions, I found an altar with this inscription, TO THE UNKNOWN GOD. Whom therefore ye ignorantly worship, him declare I unto you.God that made the world and all things therein, seeing that he is Lord of heaven and earth, dwelleth not in temples made with hands;Neither is worshipped with men's hands, as though he needed any thing, seeing he giveth to all life, and breath, and all things;And hath made of one blood all nations of men for to dwell on all the face of the earth, and hath determined the times before appointed, and the bounds of their habitation;That they should seek the Lord, if haply they might feel after him, and find him, though he be not far from every one of us: Act 17:23
He is not worshiped by human hands seen as if it was human hands that could heal as sign gift. .
Interestingly the Greek word translated Worship is the word therapeuo (Therapeutics it is used once in the scriptures)
It could be paraphrased... Neither does he heal with men's hands, as though he needed any thing, seeing he giveth to all life, and breath, and all things;
2323 therapeuo {ther-ap-yoo'-o}
from the same as 2324; TDNT - 3:128,331; v
AV - heal 38, cure 5, worship 1; 44
1) to serve, do service 2) to heal, cure, restore to health