It would make little sense for the gospels to persist in this prediction of imminent final judgment, settling scores from the foundation of the world, when Paul's gospel of Christ dying for sins had already won the day, unless the gospels are not as late as many suppose. Paul's interpretation had penetrated mainly the thinking of the passion narratives of the gospels. So the coexistence of the two interpretations of the teaching of Jesus speaks to a date before 70, before the destruction of the temple.
Jesus' is obsessed throughout the gospels with "this generation" as the focal point for God's final intervention in human history. What matters to Jesus is true repentance, not sacrifice.
The men of Nineveh shall rise in judgment with this generation, and shall condemn it: because they repented at the preaching of Jonas; and, behold, a greater than Jonas is here. The queen of the south shall rise up in the judgment with this generation, and shall condemn it: for she came from the uttermost parts of the earth to hear the wisdom of Solomon; and, behold, a greater than Solomon is here.
-- Matthew 12:41f.
Fill ye up then the measure of your fathers. Ye serpents, ye generation of vipers, how can ye escape the damnation of hell? Wherefore, behold, I send unto you prophets, and wise men, and scribes: and some of them ye shall kill and crucify; and some of them shall ye scourge in your synagogues, and persecute them from city to city: That upon you may come all the righteous blood shed upon the earth, from the blood of righteous Abel unto the blood of Zacharias son of Barachias, whom ye slew between the temple and the altar. Verily I say unto you, All these things shall come upon this generation. O Jerusalem, Jerusalem, thou that killest the prophets . . . Behold, your house is left unto you desolate.
-- Matthew 23:32ff.
The queen of the south shall rise up in the judgment with the men of this generation, and condemn them: for she came from the utmost parts of the earth to hear the wisdom of Solomon; and, behold, a greater than Solomon is here. The men of Nineve shall rise up in the judgment with this generation, and shall condemn it: for they repented at the preaching of Jonas; and, behold, a greater than Jonas is here.
-- Luke 11:31ff.
Truly ye bear witness that ye allow the deeds of your fathers: for they indeed killed them, and ye build their sepulchres. Therefore also said the wisdom of God, I will send them prophets and apostles, and some of them they shall slay and persecute: That the blood of all the prophets, which was shed from the foundation of the world, may be required of this generation; 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 11:48ff.
