We’re only talking about a few years here (by conservative estimates) or a couple of decades (according to liberal views). I do not believe that this is enough time for a full-blown legend to arise and utterly obscure whatever other accounts existed. (Remember, we’re not talking about a deliberate hoax or a mere mistaken belief. Rather, we’re talking about the natural development of a legend, which takes a great deal more time.)
As Dr. William Lane Craig said,
No modern scholar thinks of the gospels as bald-faced lies, the result of a massive conspiracy. The only place you find such conspiracy theories of history is in sensationalist, popular literature or former propaganda from behind the Iron Curtain. When you read the pages of the New Testament, there’s no doubt that these people sincerely believed in the truth of what they proclaimed. Rather ever since the time of D. F. Strauss, sceptical scholars have explained away the gospels as legends. Like the child’s game of telephone, as the stories about Jesus were passed on over the decades, they got muddled and exaggerated and mythologized until the original facts were all but lost. The Jewish peasant sage was transformed into the divine Son of God.
One of the major problems with the legend hypothesis, however, which is almost never addressed by sceptical critics, is that the time between Jesus’s death and the writing of the gospels is just too short for this to happen. This point has been well-explained by A. N. Sherwin-White in his book Roman Society and Roman Law in the New Testament.{2} Professor Sherwin-White is not a theologian; he is a professional historian of times prior to and contemporaneous with Jesus. According to Sherwin-White, the sources for Roman and Greek history are usually biased and removed one or two generations or even centuries from the events they record. Yet, he says, historians reconstruct with confidence the course of Roman and Greek history. For example, the two earliest biographies of Alexander the Great were written by Arrian and Plutarch more than 400 years after Alexander’s death, and yet classical historians still consider them to be trustworthy. The fabulous legends about Alexander the Great did not develop until during the centuries after these two writers. According to Sherwin-White, the writings of Herodotus enable us to determine the rate at which legend accumulates, and the tests show that even two generations is too short a time span to allow legendary tendencies to wipe out the hard core of historical facts. When Professor Sherwin-White turns to the gospels, he states that for the gospels to be legends, the rate of legendary accumulation would have to be “unbelievable.” More generations would be needed.
In fact, adding a time gap of two generations to Jesus’s death lands you in the second century, just when the apocryphal gospels begin to appear. These do contain all sorts of fabulous stories about Jesus, trying to fill in the years between his boyhood and his starting his ministry, for example. These are the obvious legends sought by the critics, not the biblical gospels.
(Oh, and before anyone jumps on Dr. Craig’s misspelling of “skeptical,” I’m pretty sure that this text was transcribed from one of his speeches. In other words, I’d blame the transcriber rather than the author. In his other writings, he spells the word correctly.)