Answer: Go ahead, celebrate it—what’s the problem? Why can’t you be related to it? After all, you belong to “Israel,” the desire that aspires straight to the Creator (Yashar-El).
Besides, you can celebrate this holiday in honor of the fact that there used to be a group of Kabbalists that went through the entire path of corrections and then broke up in order to help us re-ascend again today. By celebrating Passover, we associate ourselves with this group: not with a nation, but namely with a group of Kabbalists.
Every person wishing to climb out of the current state into the spiritual world has to respect and value this group, which has gone through the path and written books with instructions for us that we can use to advance forward as well. We celebrate and honor our teachers, without any connection to national belonging. We belong to this group and want to be related to it.
Later, when we enter the spiritual world, we will discover that we are together with them, that our group does not only include the friends from the whole world, but also them. Mostly they are all the Kabbalists of all the generations who once turned away from Babylon in order to take the spiritual path. And we are in their group.
From the 4th part of the Daily Kabbalah Lesson 4/13/11, Writings of Rabash