Humans, for the most part, understand the phrase “Dust to Dust, Ashes to Ashes” to mean that humans evolved from ashes, and after their time on this physical planet is complete, they return to ashes.
The terminology used in this phrase is of the earth but the real meaning originated from the Spirit which is an Energy Form. After a human’s time on the physical planet, they return back to Spirit Form.
This was brought to my attention in March 2017 during a channeling session. Below is a part of the session where I became aware of this information:

PART OF CHANNELING SESSION / MACH 12, 2017 (Bold Print Tai Chai / Italic Print Wayne)
As we proceed there is a phrase you hear upon your planet and would be interested in knowing what you think of it and that phrase is; “From ashes to ashes. Dust to dust.” What does that phrase mean to you?
That we evolve from the ashes … for, for the time period that physically we are here then we return back to ashes. In other words to me it comes we are Spirit and we became the Human Form and Spirit and we go back to Spirit form.
And do you believe that Spirit is ashes?
I believe it’s an Energy Form … (slight pause) … and that’s just the, the terminology used here on the earth so I would most, I’d say most of people don’t think realize what it stands for.
Yes!
And that, that there Spirit Forms going eventually back to Spirit Form.
And so it is that the key you have identified and that is why the word ashes and the word dust is a representation of a Physical Element. The Physical Element also retains the Energy Stamp. The Energy Identity. The Energy Dynamics. And so it is time for Beings on this planet to begin to see that what in fact it is, is Energy to Energy! From Energy you come to Energy you return. From Energy you arrived and to Energy you will arrive. That there is an ongoing Continuum of this Element and so even when the Beings read to Ashes to Ashes and Dust to Dust the imagery is Energy to Energy and that conversion is the key Element. That, that is the process of Evolution and Energy in the original format becomes denser. Becomes ah, part and parcel of accepting first what you have interpreted to be the Soul and then next the Soul implanting itself within the Physical Body and so it is that it becomes ah, part and parcel of the Energy Continuum each and every Human Being and then when it is time that same process happens in reverse that the Being becomes less and less dense. Less and less connected to the Physical Body and begins shed the Physical Body in process and then indeed shed the Soul and becomes Energy once more. The Soul as you would have it would be the Container that the Energy Being resides in during the time period upon the planet and the soul itself resides within the Container of the Human Being which would be the Human Body. That perfect imperfect vehicle. All the time that this is going on Evolution is present.
The awareness of the phrase, “Dust to Dust, Ashes to Ashes” is that Humans originate from Spirit Form and when their time is complete on the physical planet, they return to Spirit Form.
The SOUL is the Container that the Energy Being resides in during the time period upon the planet. The SOUL, itself, within the Container of the Human Being is the Human Body: The Perfect Imperfect Vehicle.
“THE HUMAN JOURNEY IS GROWING OF THE SOUL”