Dating of the book of mark radiometric dating is least useful for dating
The gospels were written in Greek, so one probably answer is that the popular Greek biographical romance had an influence on the gospel writers.However, it also has been suggested that Mark was primarily influenced by the narrative cycles in 1 and 2 Kings in the Old Testament: "It is a striking fact that almost everything Jesus is reported as doing in Mark has parallels in these cycles, which it is plain had a great influence on the writer. Mark tells the story in such a way to make sense out of that." Another reason Mark may have emphasized the messianic secret is to demonstrate that the messiah must suffer and die, which was contrary to the expectations of the vast majority of Jesus' followers.That story is directly connected to the Christian ritual of the Eucharist. As Helmut Koester has observed, the ritual cannot "live" without the story. And in the process they are defining Jesus for themselves." These shared memories, passed along by word of mouth, are known as "oral tradition." They included stories of Jesus' miracles and healings, his parables and teachings, and his death. The first written documents probably included an account of the death of Jesus and a collection of sayings attributed to him.Then, in about the year 70, the evangelist known as Mark wrote the first "gospel" -- the words mean "good news" about Jesus.
By the time Luke composed his work, tension was breaking into open hostility. The Gospel of John, sometimes called "the spiritual gospel," was probably composed between 90 and 100 CE.Its style and presentation clearly set it apart from the other three.Mark 1:1 is an incomplete sentence that sounds much like a title: "The beginning of the gospel about Jesus Christ." Because a similar phrase is found in Hebrews ("the elements of the beginning of the oracles of God") and in a third-century papyrus which speaks of a "catechumen in the beginning of the gospel," it is possible that Mark was intended as a simple introduction to Jesus' life and sayings for new converts.As he was most likely the first gospel writer, "Mark is really the one that sets the stage for all the later Christian gospel writings." So where did the author of Mark get the idea for the "gospel" genre?
A period of forty years separates the death of Jesus from the writing of the first gospel.