Well, now!
First off, like Socrates, Jesus as we know him is an amalgam of pictures painted by several different men. For (Peter and?) Mark, he is (to borrow the Islamic phrase) “the seal of the prophets” – the Son of God who does miracles and is (shhh!) the promised Christ to those who believe. For Matthew he is the fulfillment of the Jewish expectation of the Messiah, doing it his own way and not what they expected. For Luke, he is the compassionate Man of Sorrows, comforting the afflicted and afflicting the comfortable. For John, he is the Word of God Incarnate, the man so identified with God as to be indistinguishable from him – yet very human, weeping at the death of a beloved friend and caring for those he encounters. For Paul, Jesus is the firstborn of God’s new creation and the one in whom all the demands of the law and the expectations of salvation find their fulness and completion, in whom the individual believers in him are subsumed into one mystical body of the Church. Sometimes one loses sight of the historical Jesus in Paul’s metaphysical Christ.
Now, to brass tacks: what did they expect? The historical Jesus seems to have taken a quite humanistic application of the traditional Jewish law, insofar as the reports seem to converge (and one gets some contradictory impressions, some questions of interpretation, and so on). Jesus was not consciously trying to replace the law, so far as the accounts show, but to indicate that it was not a legalistic, scorekeeping code of behavior but the product of a radical love of God and fellow man. One can adduce proofs of Jesus having said anything one wants, but this seems to be the gist of his message.
Paul appears to have focused on this. Like Luther and Wesley after him, he was tortured by his own guilt at his human inability to keep the Law to the full extent of its commands. In the fulfillment of the law in Christ, he saw himself as free from the law, bound rather to the will of Christ in whom he found his salvation. Yet a part of the old legalistic Pharisee he had been hung on, and he was fond of issuing ukases in his role as Apostle to the Gentiles on what people ought to do to behave properly as Christians. He is explicit that they are not bound by the law, yet he identifies specific behaviors they are to carry out or abstain from, missing the contradictoriness between his prime message and his strictures. In this he seems to me a great deal like our FriendofGod, motivated by the same love and missionary zeal but with legalism overshadowing the message he considers most important.