זוהר שמות — דף קלז ע”א

The light that flows into the lower firmament waters and illuminates downward for the glory of God. Night to night communicates knowledge: the lower chariots are called nights and they communicate knowledge to generations. The supernal utterance is not heard but its abundance and its drawing flow downward. The holy sun takes all the hidden lights and illuminates them like a groom emerging from his canopy.