The First New Testament, written circa 150 CE didn't mention any virgin birth, family history or resurrection? Why leave out these very important pieces, unless of course, they hadn't been written into the gospels, yet?
Why the need for a New Testament anyway since salvation was already available to the Jew and Gentile within Judaism in their respective Covenants with God?
Was the First New Testament later altered, deleted, and parts invented to counter the earliest religious beliefs of the Jewish and Gentile Gnostics by Rome in the early second and later centuries?
Who found it necessary to respond to this "FIRST" New Testament with a "SECOND" New Testament which contradicted and corrected this "first" one in many places?
Did others follow the trend of adding to and further correcting the first New Testament theologically?
What was the motives of the writers of the "SECOND" New Testaments and where did these other books come from which were not previously available to the first collector?
Prove it?
Why the need for a New Testament anyway since salvation was already available to the Jew and Gentile within Judaism in their respective Covenants with God?
"Available" was not sufficient apperently. God had greater plans.
Did others follow the trend of adding to and further correcting the first New Testament theologically?
Well.... yes. It was called the Reformation (and later the "KJV").