What would you call my new beliefs?

[Nonpareil]

I would argue that time is the first, or perhaps more accurately the zeroth, dimension, underpinning the 'higher' ones. Otherwise there would be no time for events to happen in them.

Inasmuch as it makes sense to order dimensions anyway.

Well, you could. I tend to consider time as the fourth dimension because of the way a multi-dimensional space is constructed.

Start with a point. It has no dimensions. It has no length, width, or breadth. It is simply a point in space.

To construct the first dimension, place a second point beside this one, an infinite distance away. Then connect them.

You now have a line. This is one-dimensional. It has infinite length, but no height or breadth.

To construct the second dimension, place a second line beside this one, an infinite distance away. Then connect them.

You now have a plane. This is two-dimensional. It has infinite length and height, but no breadth.

To construct the third dimension, place a second plane beside this one, an infinite distance away. Then connect them.

You now have three-dimensional space. It has infinite length, height, and breadth.

To construct the fourth dimension, take a second three-dimensional space and place it beside this one, an infinite distance away. Then connect them.

Of course, you can't really do this spatially. Not in our universe, anyway; we have only three spatial dimensions to work with. So what separates one three-dimensional space from another? What separates one particular configuration of the universe from the next?

The answer, of course, is time. We now have four dimensions: length, height, breadth, and duration. Together, they make up spacetime.

Of course, this is an extremely simplified explanation that I've just kicked out in a few minutes. If you're interested in more information, or would simply like a more visual demonstration, you can check out this video, to start. It's not a perfect video, either, but it does explain the basic idea rather well.