2450. 'And all the plain' means all the things which belonged to those truths. This is clear from the meaning of 'a plain' as everything that constitutes doctrinal teaching, and so everything that belongs to truths, dealt with in 2418.

1394. The perception which angels and spirits have is such that any one of them can know in an instant the nature of the love and faith in another Hence it is that according to their similarity with one another they are joined together into communities, and according to their dissimilarity they are withheld from such associations. And this is so completely the case that not even the smallest difference fails to draw them together or to set them apart. Consequently the communities in heaven are so distinct and separate from one another that it is impossible to envisage anything more distinct, such distinctness being determined by all the differences of love to and faith in the Lord, which are countless. This is how the heavenly form is produced, the nature of which is such that it presents itself as one human being. And this form is constantly being perfected.