Yes, I see your point too, however, Paul was not chosen to replace Judas. Paul was chosen by Christ for a specific work.
Yes the same specific work as the other apostles to witness the truth of the gospel to all the world all nations
the eleven
“And said unto them,
Thus it is written, and thus it behoved Christ to suffer, and to rise from the dead the third day:
And that
repentance and remission of sins should be preached in his name among all nations, beginning at Jerusalem.
And
ye are witnesses of these things.”
Luke 24:46-48 KJV
“And he said unto them,
Go ye into all the world, and preach the gospel to every creature.
He that believeth and is baptized shall be saved; but he that believeth not shall be damned.”
Mark 16:15-16 KJV
Paul is the twelfth added by Jesus himself for the same purpose to witness the gospel of the kingdom to all people Jew first then gentile
“But rise, and stand upon thy feet: for I have appeared unto thee
for this purpose, to make thee a minister and a witness both of these things which thou hast seen, and of those things in the which I will appear unto thee;”
Acts 26:16 KJV
The apostles are simply Christs witnesses who were chosen to preach The one gospel of his kingdom to all nations to all the world ot doesn’t matter if we hear the message from Paul , Peter , John it’s all the same message of the gospel being true.
the apostles were a team of witnesses chosen by Christ to establish the gospel in the earth and again we can still today read thier eye witness of his glory John , Peter , Paul , James , Jude the book of Hebrews all of it is witnessing the gospel infact the law and prophets are also wot easing the gospel from beforehand in prophecy as the apostles were witnessing what they saw and touched now that he had come forth as the ot foretold by Gods word
Which apostles name doesn’t matter Jesus name matters they were all his chosen wotnesses to Jew first and then gentile. All they are is messengers of Christ and the gospel bearers of the good news testifying to us all that in Christ is our hope and faith
Paul’s purpose was the same as Peter and johns they were Jesus witnesses to his glory so we can hear and believe and be saved
Paul was never preaching anything other than the gospel ton The same folks the rest were ,
all creatures on earth who hear and believe ,gentile or Jew the message doesn’t change it’s the gospel of the kingdom
Paul is another part of this bekng fulfilled
“And
this gospel of the kingdom shall be preached in all the world for a witness unto all nations; and then shall the end come.”
Matthew 24:14 KJV
first he preached the kingdom to Jews then when many of them rejected it he announced he would go to the Gentiles with the message of salvation ( something Peter had already done first ( acts 10)
“And when they had appointed him a day, there came many to him into his lodging; to whom
he expounded and testified the kingdom of God, persuading them concerning Jesus, both out of the law of Moses, and out of the prophets, from morning till evening.
And some believed the things which were spoken, and
some believed not.
( quotes a well known prophecy of israels blindness to Christ )
…..Be it known therefore unto you, that
the salvation of God is sent unto the Gentiles, and that they will hear it.
And
Paul dwelt two whole years in his own hired house, and received all that came in unto him,
Preaching the kingdom of God, and teaching those things which concern the Lord Jesus Christ, with all confidence, no man forbidding him.”
Acts 28:23-24, 28, 30-31
They are all just Christs witnesses and servants for the same purpose preach the gospel to all the world