I thank Mr V T John for initiating a discussion on such an interesting topic.
As you have mentioned, Saul is indeed a Hebrew name and Paulus / Paulose is a Roman/Greek name.
You state that "The Greek translated Kheefo into their language from which we have Peter. Mseeho is also translated by them into Greek from which we get Christ."
While it is true that the Aramaic word `Kefa' has been translated to `Petros' in Greek both the words mean `rock'. Its inherent meaning was never altered. Which is also true for the word `Mashia' .But that isn't the case with Shaul.and Paul? Shaul or Saul means "asked/prayed for", "borrowed" whereas Paulus/Paulose means "small" or "humble". A translation may change the phonetics and structure of the word but never the inherent meaning of the word. Hence, I disagree when you say "Likewise Soul in Hebrew and Sovol in Syriac were simply translated into Greek from which we have Paul or Paulose."
I am no theologian, but I feel that the transformation from Saul to Paul signifies a radical shift of faith and change of heart from a zealous persecutor of faith to a zealous promoter faith.
St.Paul has referred himself as `teacher of gentiles'. After his conversion he might have chosen to discard his Jewish identity and embrace a Christian identity. As name is the principal thing that identifies oneself, he might have chosen a Roman name as part of his new identity. It may be also that a non-Hebrew name might find more acceptability among the gentiles than a Hebrew one , as even back then, the Jews weren't the most well-liked community in the Roman empire.
So why did he specifically chose the name `Paul'? Aside from the obvious reason viz the virtuous connotation, it is said by some that St.Paul took the cognomen of his first convert Lucius Sergius Paulus, the roman Proconsul.
Even today we can see that this tradition is maintained in form. When people convert to religion, it is a common practice to change one's name. It is a sign of conversion to a new faith. It's a reflection of the change that happened inside.
Hence I feel that the change of name from Saul to Paul is symbolic of the change that happened in the `Road to Damascus'
Zach George Arapura