I am reading On the banks of Plum Creek - which is part of the Little House on the Prairie (so-far, wonderful) series by Laura Ingalls Wilder - and the main character mentioned that she expected her reward for being a Good Christian was to become a beautiful angel.
This idea much appealed to her, and was a strong incentive for 'good' thought and behaviour.
I have encountered similar ideas many times over the years - I mean the idea that the aim of a Christian life was to become 'an angel'.
I personally think this is true-enough; since I regard 'angel' as a 'job-description' for messenger, intermediary; and therefore a resurrected man or woman might well be an angel. (The other type of angel is a pre-mortal, never-incarnated spirit.)
However, for mainstream Christians - whether Protestant, like Laura Ingall's Wilder's heroine; or any type of Catholic (Western or Eastern) - angels are a separate creation from Man, essentially spiritual beings (who cannot and do not ressurect) - so that Men cannot become angels; and especially not after resurrection into Heaven.
At least; that is what priests and theologians of mainstream Christianity have been saying for most of the past 2000 years...
Yet, this popular/ lay/ naive Christian belief persists - apparently naturally and spontaneously - since I doubt whether anybody has been officially taught that mortal Men can look-forward to becoming angels.
Here is a situation where many actual Christians over the centuries, including many (apparently) Good Christians, have held a heretical belief.
And if you are like me, you may agree that those uncounted 'ignorant' folk may well have been closer to the truth than Establishment opinion - despite flying in the teeth of official doctrine as expressed by informed and educated opinion.