Those who wrote the Synoptic Gospels probably spoke directly with the disciples or their students. They wrote in Greek. The Greek was translated early on into Latin. The Latin moved eventually into Anglo Saxon, and finally into early English. And still the integrity of the Bible remained.
Bible translation seems to go in spurts.
We presently are in one of those periods in which new translations abound, all of them efforts to put the Bible into the common language. This has been true since men a thousand years ago began to translate the Latin Vulgate, which few could by then read, into Anglo-Saxon. I suspect many Christians think the King James Version was the first English translation. In fact, it culminated two centuries of translating. By 1000 A.D. there were fragments of the Bible in early English.