I am wondering when the Gospels Matthew, Luke, John, Mark - were compiled together ?.
And when was the whole New Testament compiled ?. What year ?. And was there Divine intervention when compiling the New Testament ?.
The four canonical gospels were compiled fairly early, as was a group of Paul's letters. We have references to all the Gospels in the 2nd century, and St. Ireneaus writing about 180 CE speaks of the four gospels. There was some dispute (e.g. with John, because of gnostics using it) but for the most part it seems to have been settled by the end of the second century. As for inspiraction and divine intervention, the most applicable statement is from the New Testament itself, when it was said: "It seemed good to the Holy Spirit and to us" (Acts 15:28
). The organizing of the canon was also a work of both the Holy Spirit and people. And when people get involved, things don't always go smoothly.
The New Testament as we know it was almost unanimously settled (in Eastern Orthodox/Roman Catholic lands, anyway) by the end of the 4th century, with Sts. Athanasius, Gregory the Theologian, Jerome, and many other saints weighing in, in addition to councils. St. Athanasius is generally considered the first authorative voice to list the New Testament books as we have them, and that was in 367. It would be a few more years before everyone would come to a consensus, but not long. I wouldn't say there was divine intervention so much as divine inspiration gradually nudging the Church in the right direction.