When Jesus left the world and left Peter to lead the church. It says it somewhere in a gospel but I cant remember right now.
The first Sunday of Advent marks the beginning of a new liturgical year.
The calendar is intended to mark the number of years since the death of King Herod the Great. The Roman abbot Dionysus Exiguus devised the new Christian calendar in 533. He knew that it was impossible to say when Jesus was born, but he knew, or thought he knew, when Herod died. So, he chose to begin his Christian calendar on the year of Herod's death, and he based this on the reign of the Roman emperor Augustus. Unaware that Augustus only adopted that name four years after his reign began, going by his birth name of Octavius until then, Exiguus commenced his calendar just 4 years too late.
Gastrulation marks the beginning of germ layer development in an embryo.
true it is.
The characteristics that identify the Church are called "marks". There are four of them. These are characteristics/marks are that the true Church is: * One * Holy * Catholic * Apostolic
This marks the beginning of a holy a life i.e they are commissioned to and lead a life full of holiness and justice
One Holy Apostolic Church
It marks the beginning of the DNA chain
The December solstice, which is the winter solstice in the northern hemisphere marks the beginning of northern winter.
The fall of classicism, Huns, and Byaztine marks the beginning of the ppost classical period
The four marks of the catholic church are One Holy Catholic Apostolic
I believe you are asking about the four marks of the Church, not four ways the Church is "one." The four marks are: One, Holy, Catholic, and Apostolic. ("One" is one of the marks.)