Did Paul the Apostle know that his letters will be taken as Holy Scriptures?

I think so.

1Cor 14:37 If any man thinks himself to be a prophet, or spiritual, let him recognize the things which I write to you, that they are the commandment of the Lord.

Prophets in the first century could tell if a written work was inspired of God or not. Their testimony was the foundation behind the canon. Peter, a prophet, knew that Paul's letters were scripture (2Pet 3:16). As Paul was a prophet, one can safely assume that he also knew his letters were Holy scripture.

None of the biblical writers had a clue that their writings would someday be gathered into a book called the Bible. The ONE Church Jesus Christ founded did not decide to produce such a book until three and a half centuries after the death and Resurrection of Jesus Christ. At that point in time, the Pope called a council of the bishops of the Catholic Church, who studied and discerned over 200 texts under the guidance of the Holy Spirit before selecting the 73 divinely inspired writings that became the Holy Bible.

Like Jesus, Paul believed the end of the world was coming right away. No, he had no idea.

"What I mean, brothers and sisters, is that the time is short. From now on those who have wives should live as if they do not; those who mourn, as if they did not; those who are happy, as if they were not; those who buy something, as if it were not theirs to keep; those who use the things of the world, as if not engrossed in them. For this world in its present form is passing away."

-- The Apostle Paul, I Corinthians 7:29 - 31

P.S. For those who don't like my interpretation, take up your disagreements with your fellow Christians first; when you guys get it worked out, I'll listen. Until then, mine is as good as yours.

Paul certainly intended his readers to take his letters as authoritative. He also might have anticipated that they would be incorporated into some collection of teachings as the rabbinic Jews collected the wisdom of the sages, prophets and teachers into collections as sacred writings. But we can't know if Paul anticipated the creation of the New Testament nor can we know if he expected his letters to be represented in it.

http://hermeneutics.stackexchange.com/questions/13...

yes, he wrote what Jesus specifically told him, and said to pass them among the churches, like they did the rest of the scriptures.

Even Peter knew that Paul's writings were scrupture, according to what he said about Paul's writings in his own epistle

Since he knew the scripture before him, and he was writing about the promised Messiah, I'm sure he hoped that many generations would read his writings.

Yes. Early Christians knew it too. This is why his letters were copied and read in all the churches, not just those they were addressed to.

(1 Corinthians 11:1) Become imitators of me, just as I am of Christ.

So whatever he wrote, he had Jesus' approval...

Yes.

no

none of what anyone wrote was written to be in a book called a bible...