10017. 'And the priesthood shall be theirs' means the stages, following one after another, of the Lord's work of salvation. This is clear from the meaning of 'the priesthood' or 'the priestly office' as that which is representative of the Lord's whole work of salvation, dealt with in 9809. The reason why the stages following one after another is meant is that the priesthood of Aaron's sons is the subject here, and his sons represent the things which emanate and so follow in order one after another, 9807. The situation in all this is that the priesthood which Aaron represents consists in the work of saving those who are in the Lord's celestial kingdom, this kingdom being the proper meaning in the Word of 'a kingdom of priests'. But the priesthood which Aaron's sons represent consists in the work of saving those who are in the Lord's spiritual kingdom emanating directly from His celestial kingdom. From this it is evident that 'the priesthood' is used in the present instance to mean the stages, following one after another, of the Lord's work of salvation. But the priesthood which the Levites represent consists in the Lord's work of salvation at a further stage.

[2] There are three realities which follow one another in order. These are the celestial, which is the good of love to the Lord; the spiritual, which is the good of charity towards the neighbour; and the natural springing from these, which is the good of faith. Since these three are realities which follow one another in order there are also three heavens, and in them the types of good follow in that order. The work of saving those with whom celestial good exists is represented by Aaron's priesthood; but the work of saving those with whom spiritual good exists is represented by the priesthood of Aaron's sons, and the work of saving those with whom the natural good springing from these exists is represented by the priesthood of the Levites. And since the things following one another in order emanate from the good of love to the Lord, which is represented by Aaron and his priesthood, it is said of the Levites that they were given to Aaron. For things which emanate belong to that from which they emanate; such emanations or stages following one after another owe their very existence to that source, as accords with what has been stated a little above in 10011. The fact that the Levites were given to Aaron and his sons to perform priestly duties under them, see Numbers 3:1-end.

Instead, spiritual reality is structured on the basis of spiritual state, or the loves and thoughts of angels. These loves and thoughts connect in chains of cause and effect, which angels experience much as we experience time. One thought flows into another on the spiritual level, and angels sense that progression the same way we sense the progression of one moment flowing into another. And when angels have thoughts and feelings that are similar, they experience a closeness that is very much the same as our experience of physical closeness; their idea of “space” is the variation in thoughts and affections held by spirits throughout the spiritual world.When the Bible describes something as “after” something else, then, the spiritual meaning has to do with the progression of spiritual states; it is a new spiritual state emerging from the one before it. And since higher states flow into lower states, the things coming “after” tend to be the lower, more external ones. For instance, the deep, internal desire to be good to others flows of its own accord into specific ideas of specific good things we can do. Those specific ideas, then, would be “after” the desire to be good.According to Swedenborg, time and space don’t exist in spiritual reality; they are purely natural things that exist only on the physical plane. This means that one spiritual thing can’t happen “after” another spiritual thing in time, because there is no time. And one spiritual thing can’t follow “after” another in space because there is no space.