Perfection to me is not just at the cellular (and physical) level. And you described this well when you said "it isn't drinking from dirty cups or eating out of a dirty bowl that makes us impure it is the thoughts that are born within our hearts and minds.
The modern teachings say:
“The most important temples in life are the spirit, which must be fed with sincerity, the mind, which must be fed with honesty, and the body, which must be fed with right food. This will create harmony in mind, spirit and body.”
And so "perfection", it seems, is in the harmony or the syntheses between the spirit, mind and body. In the East, they called this process "polishing the mirror". This process was also described by the Master Jesus on the cross when He said "Thy will Father, not mine". Perfection, therefore, is a matter of alignment between spirit and the form (aka the "flesh").
If we, as mere humans, can even begin to align our words (our spirit), our thoughts and our actions, then we can begin to walk the path of perfection.
"Synthesis", says the Tibetan, "dictates the trend of all evolutionary processes today; all is working towards larger unified blocks, towards amalgamations, international relationships, global planning, brotherhood, economic fusion, the free flow of commodities everywhere, interdependence, fellowship of faiths, movements based upon the welfare of humanity as a whole, and ideological concepts which deal with wholes, and which mitigate against division, separation and isolation."
- from the AAB book The Rays and the Initiations
"Revelation concerns Oneness and nothing else. The practical nature of this truth is only recognised when the disciple attempts to do two things: To realise it individually and to bring the nature of planetary unity and of non-separateness to the minds and into the lives of men everywhere."
- Ibid