Wheel within a wheel and the cherubim with sleepless eye?

[YinYang]

I don't think I understand what Ra is referring to here:

Questioner: Then Yahweh, in an attempt to correct what he saw as what I might call a mistake (I know you don’t want to call it that), started 3,300 years ago with the positive philosophy. Were both the Orion and Yahweh philosophies impressed telepathically, or were there other techniques used?

Ra: I am Ra. There were two other techniques used: one by the entity no longer called Yahweh, who still felt that if it could raise up entities which were superior to the negative forces, that these superior entities could spread the Law of One. Thus this entity, “Yod Heh Shin Vau Heh,” came among your people in form according to incarnate being and mated in the normal reproductive manner of your physical complexes, thus birthing a generation of much larger beings, these beings called “Anak.”

The other method used to greater effect later in the scenario, as you would call it, was the thought-form such as we often use among your peoples to suggest the mysterious or the sublime. You may be familiar with some of these appearances.

Questioner: Could you state some of those after making the instrument cough, please?

Ra: [Cough.] I am Ra. This is information which you may discover. However, we will briefly point the way by indicating the so-called wheel within a wheel and the cherubim with sleepless eye.

I understand they're pointing to the Wheel of Fortune / Catalyst of the Body, but that doesn't make me any the wiser. Are they referring to actual sightings of Confederation craft? Or perhaps going on board?