What’s a Tesseract?

I understand “a cube” (I have a Rubik’s at home!). There are three conventional spatial dimensions: length (or depth), width, and height, often expressed as ‘x’, ‘y’ and ‘z’. ‘x’ and ‘y’ axes appear on a plane Cartesian graph. A cube is a is a three-dimensional solid object where the length = the width = the height.

What does one do with four dimensions? (Frankly it is beyond me!). I understand that in geometry, the tesseract, also called 8-cell or octachoron, is the four-dimensional analog of the cube. The rotating graphic above represents a tesseract.

I find it interesting that Paul refers to four dimensions in Ephesians 3:17-19:

that you, being rooted and grounded in love, may be able to comprehend with all the saints what is the width and length and depth and height — to know the love of Christ which passes knowledge

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