The seven years before the son of David

The rabbis taught: In this Sabbatic period in which the son of David will appear in the first year there will be fulfilled what is written, in [Amos, iv. 7]: "And I caused it to rain upon one city, and upon another city I caused it not to rain." In the second year, arrows (tokens) of famine will be sent. In the third, a great famine, from which men, women, and children, pious men and men of good deeds will die, and the Torah will be forgotten by their scholars. In the fourth there will be abundance, and not abundance. In the fifth there will be great abundance, and the people will eat, drink, and enjoy themselves, and the Torah will return to her scholars. In the sixth, voices will be heard saying that the Messiah is near. In the seventh, war will be, and at the end of the seventh, ben David will come. Said R. Joseph: Were there not many Sabbatical periods which were like this, but still he did not come? Said Abayi: Were then the above-mentioned voices heard in the sixth? And was there in the seventh war? And secondly, has it then happened in the same order as said above?