Ok wanna hear my theory on angels?

First, this presumes all accounts are true, so if you can't get by that, stop here.

The people on record of having seen angels describe them as having "wings" and "eyes", however as these people were very likely agricultural in nature (farmers, herders, etc.) they may have simply described what they saw with the closest analogies they had. What they actually saw could have been something much different, but so far beyond their experience that they couldn't describe them any other way.

Hypothesis: angels are actually higher dimensional beings that exist in more than 3 dimensions, and intersect part of their being to our 3 dimensions in order to interact with us. "Wings" and "eyes", along with "wheels within wheels" could be undulations, harmonics, ripples, echoes, sympathetic frequencies of their actual presence that we interpret as best we can. It's like when the sphere visits Flatland, we are seeing multidimensional cross sections of them, which give them such an otherworldly appearance.