Now you can understand that earlier generations were at an infinitely greater level than later ones. For that is the principle of all the Partzufim of the worlds and the souls. The purer something is, the earlier it is selected for the Partzuf. Hence, the vessels of ḤaBad were selected first from the world and from the souls. That is why the souls in the first two thousand years were at an infinitely higher level. Yet, they were still unable to receive the level of perfect light, because the lower levels in the world and within themselves, ḤaGaT NaHYM, were not completed.