Част 5 · Chapter 22

This also explains why the vessel is called one vessel, alone, and the lights are called ten. This is because when the light departs, everything is called one vessel, and not ten vessels. Conversely, the lights within them, when they expand once more in a real expansion, which is the second expansion, it does not expand at once inside the vessel, as it departed, but rather enters and exits ten exits and ten entries. It enters and exits ten times: once in Keter, once in Hochma, and so forth in all of them. This is why they are called ten lights, but the vessel is made at once in one departure, when it departed at once. For this reason, it is called one vessel.