Did belief in an ethereal heaven with spirits and disembodiment not come from Platoni

What evidence is there that 1st century Christians thought they'd be floating around on puffy white clouds strumming harps etc?

I will have to play my pod since I cant read music.

Yes the modern concept of "heaven" evolved from Plato and his extra-planer world of forms. no the 1st century Christians didn't think they would be floating around on clouds with harps.

EDIT: for those of you touting the bodily Resurrection idea, i think you have sorely missed the point... to use christian theology, the body is "of this world". do you really think heaven will be a material world? if so, why shouldn't we enjoy and covet physical things to keep for the next life? how could any ideal concept be limited to a finite form? yes Jesus did reappear in a physical form, but was this his final form, or did he just take it so to communicate with us finite beings? do you really think a limitless, infinite existence would be confined to such a limited form?

to borrow from Platonic ideas, the world of forms is unmanliest. bodies themselves dint exist there, only the idea of a body. for that matter, nothing itself exists there in its expression, only its idea. to be expressed, it has to be translated to the finite plane.

just because one in the world of heaven CAN have a body, does not mean that that is their true and unlimited form. just because God appeared as a burning bush to Moses, does that mean that there is some burning bush floating around in Heaven all the time? that would be just as silly as confining Jesus to a worldly body.

sorry that was a bit of a rant... and i doubt it will have much impact, but its worth a try

There is no evidence because first-century Christians, like those of today who have kept the faith, believe in the "bodily resurrection" (if you haven't heard that term before, you really need to do some more reading on the subject). Like Christ when he rose from the dead, those in heaven will receive glorified bodies in which to live out eternal bliss (while those in hell will receive them for eternal temporal punishment). This doctrine is clearly expressed in the Nicene Creed which is the benchmark of Christianity.

I agree this concepts originated with the Greek philosophers and further developed by other related teachings like Gnosticism, Dualism, etc....

Only Hellenized Christianity relates to this kind of hope for the afterlife. The gospels look forward to God's kingdom coming here on earth, a kingdom brought here by the return of Jesus. Along with another answerer above, I also hope for a bodily resurrection to immortal life in Jesus' kingdom. The rest of the bible also carries the same idea.

Both Gnosticism and Christianity were influenced by Greek thought and Judaism.