Sthavirah means most ancient or older than the oldest. This means, the Supreme lord Sri Krishna is the cause for this Universe and is timeless, ageless and does not ever change. We of this material world, have an ageing process, our age is always on the increase but it cannot be reversed, unlike that of Lord who can change His age from a two year old to twenty year old and can become a two year old again.
ajo ‘pi sann avyayatma bhutanam isvaro ‘pi san
prakrtim svam adhisthaya sambhavamy atma-mayaya (BG 4.6)
Although I am unborn and My transcendental body never deteriorates, and although I am the Lord of all sentient beings, I still appear in every millennium in My original transcendental form.
Despite the fact Lord Krsna grows from childhood to boyhood and from boyhood to youth, astonishingly enough He never ages beyond youth. At the time of the Battle of Kuruksetra, He had many grandchildren at home; or, in other words, He had sufficiently aged by material calculations. Still He looked just like a young man twenty or twenty-five years old. We never see a picture of Krsna in old age because He never grows old like us, although He is the oldest person in the whole creation—past, present, and future. Neither His body nor His intelligence ever deteriorates or changes. Therefore, it is clear that in spite of His being in the material world, He is the same unborn, eternal form of bliss and knowledge, changeless in His transcendental body and intelligence.
Lets chant the Holy Name of this oldest person yet the youngest of all and seek to be in His devotional service all through our material journey.
Nama 54 – VishnuSahasranama