God is not the God of the dead, but of the living.
-- Matthew 22:32
He is not the God of the dead, but the God of the living.
-- Mark 12:27
For he is not a God of the dead, but of the living: for all live unto him.
-- Luke 20:38
The idea that Jesus got into a dust-up with the Sadducees over the intermediate state and resurrection and basically ended up taking the position of the Pharisees for himself is absurd. This is evidence of the later Pauline consensus contaminating the tradition, at the expense of the eschatology of the historical Jesus.
Talk of an intermediate state, for example, between death and final judgment where the dead go to be with the Lord interjects a fatal pause to the present time, which for Jesus is pregnant with eschatological expectation. That pause necessarily would have undercut the present sense of urgency which informed the call to repent and escape what is surely coming.
With an intermediate state awaiting at death instead of judgment imminently confronting, one rationalizes away the extraordinary current moment in favor of the continuation of human history as it has always continued.
The need to leave all and follow Jesus evaporates (Matthew 4; Mark 10; Luke 5; Luke 18), replaced by less consequential belief.
The establishment of a settled life and therefore a church is made possible, which accomodates itself to time instead of revolting against it.
A Gentile mission, specifically ruled out by Jesus (Matthew 10), becomes possible in Athens where "in him we live and move and have our being" (Acts 17:28) has more currency than "the kingdom of God is at hand" in Jerusalem (Mark 1:15). The kingdom focused on Jerusalem recedes from view, as does the God who is coming there soon to judge this generation's guilt for the blood of all the prophets!
The problem for historians is that there was never a sound proponent of Jesus' eschatology who followed him who could match the thoroughgoing Pauline theology. And why should have such a person arisen if his followers "after the flesh" had truly understood Jesus as they must have? Their expectation also would have continued to be for an imminent end, even despite the death and resurrection of their master: "Wilt thou at this time restore again the kingdom to Israel?" (Acts 1:6). There was no impetus to document anything for posterity, since posterity would never come to exist. This means that the gospels must be viewed with great suspicion everywhere, for they are the products of the subsequent, already compromised, period. They are not of the Urzeit. Only out of respect for Jesus do they preserve any of the conflicting evidence from his teaching.
Consider that if an intermediate state is put forward in the mouth of Jesus, all sense of urgency about the imminent coming judgment he predicted would necessarily melt away with authority. Belief in the restyled message of atonement could more easily become the message, relieving everyone of the onerous original obligations of discipleship. The obvious failure of the kingdom's coming meant Paul's rationalizations were ready made for the occasion, and came as a relief. In he stepped and supplied the solution to the ongoing disappointment caused by the delay of the parousia, and the death of the disciples' generation simply made all this a fait accompli.
Jesus did not view himself as Paul viewed him. "Wherefore henceforth know we no man after the flesh: yea, though we have known Christ after the flesh, yet now henceforth know we him no more" (2 Corinthians 5:16). Jesus viewed himself as the people viewed him, as a prophet. Thinking himself destined for death as so many of the prophets before him were, Jesus is unique because he thought of himself as the final prophet. Even as he's about to die he can say that history as we know it is about to end, too:
"[Y]e shall see the Son of man sitting on the right hand of power, and coming in the clouds of heaven."
-- Mark 14:62
"From the blood of Abel unto the blood of Zacharias, which perished
between the altar and the temple: verily I say unto you, It shall be
required of this generation."
-- Luke 11:51
This is where Muhammad got his idea to style himself as the final prophet, but armed with a sword, centuries later! More than most New Testament critics of modern times, Muhammad long before sensed the inadequacy of the gospels' handling of Jesus' eschatological message. And if Paul of Tarsus could receive direct revelations from God and refound a movement, so much more the better. So could he!
There is no dying and rising as a sacrifice for sins in Jesus' mind, only prophets perishing unjustly in Jerusalem. The rising is added under the influence of hysterical women, and an unstable Pharisee, Paul.
The fanatical Benjaminite had recourse to the resurrected Jesus to make sense of his own personal conversion experience, which was really a mental breakdown if one is to be perfectly frank about it. After all, after a surprising, brief period of activity as a Jesus advocate instead of as the well known and feared Jesus persecutor he had recently been, Paul disappears for a period of ten years, if the chronology and the account are to be believed. This is hardly the behavior of a settled individual convinced by his experiences one way or another, but of a still-troubled person. It was during this time that Paul must have developed his ideas of Jesus' sacrificial death and resurrection under the influence of the direct, supernatural visions and revelations he claimed were the sole basis of his gospel: "For I neither received it of man, neither was I taught it, but by the revelation of Jesus Christ" (Galatians 1:12). What these really were is anyone's guess, but in his own time people already were calling him crazy. To be sure they are at the same time productive of ingenious solutions, as his letters testify. These solutions eventually supplied Paul with a ready escape from the offense of his own Jewish particularity, which he experienced as a Roman citizen in his Asian backwater, and at the same time validated the Pharisaic impulse, which he imbibed as a youth and to which he remained committed, to democratize Temple holiness by making proselytes and founding synagogues. His possession of the Roman franchise reinforced his ideas of human equality under God and their legitimacy.
The body of Jesus temporarily and hastily buried was missing on Easter morn because it was moved. The disciples to a man did not believe Jesus rose from the dead, only the women in their hysteria at discovering this did. (If one is looking for the incipient enthusiasm later displayed by early Christianity described in Acts, it is here). The gospels' portrayal of the general dim pall of ignorance of a predicted rising on the third day which hung over the movement despite all the supposed evidence to the contrary makes no sense if Jesus were in fact a resurrection preacher and intermediate state believer first and foremost. That "evidence" became part of the narrative ex post facto. The idea otherwise should not have been rejected so out of hand by his very own disciples as it was. The plainest explanation for their unbelief on the third day is that they had no prior knowledge of the idea of resurrection on the third day, and that because Jesus had never preached it.
Paul the Apostle is the true founder of Christianity. He co-opted the sectarian Jewish eschatological religion preached by Jesus. An enthusiast for Pharisaism to the end, Paul's personal ambition was to make Judaism safe as a universal religion, relegating present Jerusalem to the discarded past: "She is in slavery with her children" (Galatians 4:25). By turning Jesus into a Pharisee, he succeeded.
Nevertheless I must go on my way today and tomorrow and the day following; for it cannot be that a prophet should perish away from Jerusalem. O Jerusalem, Jerusalem, which killest the prophets, and stonest them that are sent unto thee; how often would I have gathered thy children together, as a hen doth gather her brood under her wings, and ye would not!
-- Luke 13:33f.