The Catholic Church began at Pentecost with the coming of the Holy Spirit "like the rush of a mighty wind" on the Apostles in the upper room, read the second chapter of Acts.
It began on the day of Pentecost.
during pentecost
A: The Church came into formal/actual existence at Pentecost.
Most scholars place the beginning of the Church (which was founded at Pentecost) in the year 33 A.D.
Pentecost Sunday in about the year 33 AD. is considered the birthday of the Catholic Church.
In Jerusalem on Pentecost Sunday in the year 33 AD.
.Catholic AnswerSt. Peter, in Jerusalem, 33 A.D. on Pentecost, in cooperation with the Holy Spirit.
Around 33 AD in Jerusalem, on the Day of Pentecost.
Our Blessed Lord established the Catholic Church in Jerusalem with the sending of the Holy Spirit on Pentecost around 34 A.D.
On Pentecost the Holy Spirit descended upon the apostles giving them the stimulation they needed to begin preaching the Gospel. Pentecost is the birthday of the Church and, had it not happened, the Church never would have gotten started. It would have died out quickly.
The earliest Catholic community (at least if you follow Catholic teaching) was the 12 Apostles themselves, from Pentecost onwards.
The beginning of Christianity was in Israel at Pentecost when the Holy Spirit came on the disciples to form the Catholic Church.