Very interesting. I received a gift of the Ascetical Homilies of St. Isaac the Syrian and Elder Ieronymos is dedicated in it along with Elder Joseph the Hesychast. They lived their lives by St. Isaac's writings. Elder Ieronymos instructed that one page should be read a day. No more or no less. There you will see yourself as if in a mirror.
His monastic life of
simplicity and deep compunction
was due to his imitation of St. Isaac's teachings. It is an ancient way of life that not many monks can follow now. And it seems so far away from a regular monastic lifestyle that we are used to.
Icxypion,
if you want to know more about Elder Ieronymos then read the book I mentioned. That's the
that you are looking for and which he imparted to others. He was so greatly influenced by St. Isaac that he lived by his teachings.
And what is the spiritual gold? It's the teachings of Jesus Christ. Repent, have mercy, love your neighbor as yourself. Put others before yourself. And by doing all this, you take up your cross. That is what Elder Ieronymos lived everyday. What you see in him is not a reflection of such a great man, as our secular minds analyze, but it is the image of Jesus Christ in him. And that is what made Elder Ieronymos beyond this world and so amazing to our sinful observations.
We can all achieve that level, in our own way.