You're speaking of the results of ones ministry, not proof of a calling straight from God.
With the Apostle Paul, the church already knew Paul was God's chosen vessel before he had started any of his ministry.
Initially, after Saul's conversion, almost everyone feared him. No one but Ananias and perhaps just a very few others recognized that he was called. It was Barnabas that introduced him to the Apostles. They also feared Saul, and that was three years after his conversion to Christ. Before that time he was in Arabia:
Galatians 1:15 But when it pleased God, who separated me from my mother's womb, and called
me by his grace,
16 To reveal his Son in me, that I might preach him among the heathen; immediately I conferred not with flesh and blood:
17 Neither went I up to Jerusalem to them which were apostles before me; but I went into Arabia, and returned again unto Damascus.
18 Then
after three years I went up to Jerusalem to see Peter, and abode with him fifteen days.
Every Christian is a missionary. The word, comes from the Latin mittere, which in tern comes from the Greek apostlos--one sent with a message. We are all sent with a message, the message of salvation to those who do not have it.
You are either a missionary or a mission field.
God commanded his disciples to go into all the world and preach the gospel.
There is no command to stay home.
If you need a special calling that calling better be to "stay home," not to go. Not to go, would be disobedience.