The Joachimites, also known as Joachites, a millenarian group, arose from the Franciscans in the thirteenth century. They based their ideas on the prior works of Joachim of Fiore (c. 1135 – 1202), though rejecting the Church of their day more strongly than he had.
Joachim's works seem to divide history into three ages. The first age was of the Father. The age of the Father was the age of the Old Covenant. The second age was of the Son and therefore the world of Christianity. The third and final age would be that of the Holy Spirit. In this new age an "Eternal Gospel" would be revealed "fulfilling" and replacing the organized church. After that society would be realigned on an egalitarian and utopian monastic base. The first age is said to have been of forty-two generations. The second age would also be of 42 generations. Joachim seemed to suggest the Christian era would end in 1260 with the coming of the Anti-Christ. After that a utopian age would arrive.
Initially this did not cause condemnation; efforts recently have even been made toward his canonization, as what was meant was disputed. Several interpreters view his utopian age literally as heaven or, at least, as the age after the Second Coming since it comes after the Anti-Christ and the Tribulation. Consequently, to state that the Church would then be unnecessary might be acceptable.
In 1215 some of his ideas were condemned in the Fourth Council of the Lateran. Further, his admirers came to believe the beginning of this New Age would be ushered in by the coming of a virtuous Pope from the Franciscan order. They considered Celestine V to be this Pope. His resignation, and death in 1296 in the dungeons of the next Pope, was considered a sign of the coming of the Anti-Christ. Around this time, or somewhat before, they further decided Joachim's own writings were the Eternal Gospel or the road to it.
The fact that the movement also moved toward a more practical approach did have some influence. It was one of the first movements to be heavily geared toward the future as being made perfectible through human action. This action was largely to lead toward a great supernatural event, but had a great deal of real world notions of progress. Ultimately, however, this was also generally opposed, as utopian revelations were deemed to be foolishness or even heresy.