It is common in the Bible for people to "rise up," and it would be easy to pass over the phrase as simply describing a physical action. But in fact it represents an elevation in spiritual state, moving to a more internal frame of mind closer to the Lord. Often it has to do with understanding a new or important idea; we "rise up" to a state of greater perception and enlightenment. Obviously context is crucial to the exact meaning of the phrase in a given passage -- it matters greatly who it is that is rising up, and why.

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.