In Flatland, 3D man has the ability to move up and down vertically, so can literally move into the 2D man. Likewise, 2D man can move horizontally along the 1D man's plane. The 1D man's plane allows for more than one existing entity - the 0D man is a singular entity point, aware only of its own existence, where all others are posited to be the thoughts of another.

The opportunity of another to have more powers than ourselves (i.e. to have another dimension to themselves) is something we might consider as akin to "Godliness". However, the problem exists that if our 3D world is superceeded by a 4D world, then there are theoretical 5D, 6D, 7D... etc worlds. Thus there is a continual sense of "Godliness" until we reach an "InfinityD" world, where every possible dimension of existence is present in each entity.

Ergo, a 4D man may be a 3D man's god, but we would both deify a 5D man, and so on.

Edit - But we would struggle to understand anything with more dimensions than we contain.