Abraham1:
What Paul taught was the fulfillment of what Jesus foretold
Not at all. Paul’s writings came first, in which he knows very little about Jesus at all - not much beyond saying he was ‘sacrificed’ (instituted the ‘memorial’ and then killed). All of the more specific stories about Jesus, including almost all statements attributed to Jesus - including the 4 ‘gospels’ - were written later. Acts, including its ‘account’ of Paul’s ‘conversion’ that contradicts Paul’s version in Galatians, was also written later.