The body is the descent into prakriti

The body and its formation,

Is a massive descent into "prakriti".

You simply join one of the "streams" of "existing lineages",

Depending on what you (as the residual seed) gravitate towards.

Then as the river of time flows, 

It forges the whirlpool (gross and subtle physicality/cycles) of the subject's body-mind like a potters wheel.

As the subject/body-mind is gathered in time, 

It focuses (like a camera lens focuses) the experience of the outer world too.

The body-mind is like the prism,

That diffracts the undifferentiated white light,

Into various colors,

No different from how a projector light passed through a film,

Modifies the white light into the movie.
The changing world is only the projection of the changing self.

The definition and complexity of the subject forged,

Translates into the definition and complexity of the world too.

This process goes on at different speeds at different points in the time stream.

At a certain time, the same time stream dissolves the subject,

And with it also dissolves the world experience.

If this dissolution is fully complete, 

Then it is a complete life leaving no residue (maha-pari-nirava or liberation).
If the dissolution is only until a residual seed (from identification),

Then that residual seed gravitates to another body-mind from some lineage stream in prakriti,

To fulfill its desires.

The body-mind and the world experience appear together and disappear together.

Just like the projector film and the movie appearance appear and disappear together.

The world is a projection of the self (which is the residue of the time-flow/stream that is identified with).

All desire is from false identification.

Because you think you have been lost with the loss of things or experiences,

And that there is a you present in the things/experiences that you are now separated from.
When the 'you' is completely freed from all the formations in this density,
One can be said to be freed liberated enlightened from this density of existence.