זוהר שמות — דף ריג ע”א

This firmament travels again, turning and revolving. The first letters mentioned, Aleph-Tet and Beth-Het, are all included in those supernal letters, the secret of the Holy Name. They revolve around that firmament. The letters that were in the middle stand and revolve together in a supernal secret. The movement of the letters in the firmament is the expression of the divine forces that move the world.