The Bible.
The New Testament is the most popular collection. However, there are also non-canonical writings attributed to Paul as well as to other Christians.
New Testament
Plato, the early Christians, Thomas More, Karl Marx.
They chased and killed christians, and christians fled and spread the gospel through Asia and Europe. On the other hand, they also preserved versions of the early bible books in their vaults.
Christians began valuing life before birth from the early days of the church, as reflected in early Christian writings and teachings. The belief in the sanctity of life from conception has been a consistent part of Christian ethics and theology throughout history.
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.
The Writings of the Church Fathers.
Why were early christians attracted attracted to the island
It is not so much that they have authority, but rather their writings convey a sense of how Christianity developed in those early years. Since they were "closer" to the origins, and their writings tend to be completely disregarded by Fundamentalist Protestants, they serve as a good guide as to how the early Christians actually practiced the faith (for the accounts in the Bible are rather vague on specifics).
The early sociologists devoted most of their writings to events and cultural myths. Most of the writing was out of mere speculation.
Yes, the Moors did persecute the Early Christians.