shaman
In early communities, holy people often included religious leaders such as priests, prophets, or shamans who were believed to have a special connection to the divine. These individuals were seen as intermediaries between the community and the spiritual realm, providing guidance, performing religious rituals, and interpreting messages from the gods.
Early Christian Communities were led by bishops.
A person on a visit to holy places is often referred to as a pilgrim.
The process is called canonization.
A person who journeys to a holy place is called a pilgrim in English, a Yatri in Hindi and a Haji in Arabic.
That would be an ashram. See http://en.wikipedia.org/wiki/Ashram
The priest is called Pandit.
Soothsayer, shaman, sage, priest? There are lots of names!
I think the person asking the question meant to say OldTestament. Neither the Old nor the New Testament was called that until they were compiled as the Bible in the late 14th century.
Be Baptized, and then receive the Holy Spirit from the Apostles laying their hands upon them.
Jesus is the person who honours when he or she is holy when they finish the earthly race without any blemish in their life by giving them the crown of life.
If by "communities" you mean the 1000+ Christian sects, the one thing they all have in common is their belief in the Holy Trinity: God the Father, God the Son, and God the Holy Ghost/Spirit.