Hi!
…yeah, there are seemingly conflicting things happening in Scriptures; what we have to take into account is the fact that what we find in Scriptures is not always in a chronological narration.
Things are happening from day One (Incarnation of the Word); as time allows St. John’s Ministry begins, then Jesus’ and finally the Apostles’.
For the formative years of the Apostles they only have the Old Covenant’s Writings; Jesus does not employ scribes to take down His Teachings; the Apostles, in turn, do not employ scribes (though they must have communicated by text as a normal means of communication); then, when the Holy Spirit Inspired, the Teaching of Christ began to be Unfolded through the New Covenant’s Writings–these would address Worship, Doctrine, and fight heresies–but they would not include everything, Doctrinal and otherwise, that is taking place.
St. Paul was not part of Jesus’ Ministry; not only that but he persecuted the Church; his conversion was special (I would say singular) and it was through Divine Instruction that he Receive the Gospel directly from Christ (no need to be a disciple of anyone to come to his conversion).
But the Twelve did not wait around till Saul found his way, through Christ’s direct Intervention. So when he comes to the Christian Understanding, Saul, now Paul (noticed how only two are given new names by Christ?) begins his Missionary work right where he was sent:
16 To reveal his Son in me, that I might preach him among the Gentiles, immediately I condescended not to flesh and blood. 17 Neither went I to Jerusalem, to the apostles who were before me: but I went into Arabia, and again I returned to Damascus. 18 Then, after three years, I went to Jerusalem, to see Peter, and I tarried with him fifteen days. (Galatians 1)
We know that not everything is found Written in Scriptures; yet, from the context, we can ascertain that there was some question as to St. Paul’s authority and his Christian origins.
He equaled the other Apostles in the Gospel of Christ and he did not Teach error/contradicting doctrine since we find that not once is his teaching denounced as error or anti-Christian; rather, we find that when this issue arouse in a catholic (universal) format, St. Peter addresses the matter as he chastises those who are teaching error and promoting heresy–St. Peter states that St. Paul’s Writings are Sacred Scriptures.
What exactly took place during those three years between Saul’s conversion and his work directly with the other Apostles? Who knows? We only know that his Ministry began in Arabia–remember, he was Called to be an Apostle to the Gentiles, Israel already had Twelve working within her boundaries.
Maran atha!
Angel