The argument from undesigned concidences is a little known argument for the historicity of the New Testament. Once popular in the nineteenth century, the argument has more recently been brought to light by Professor Tim McGrew of Western Michigan University. Very simply, the argument shows how incidental details that are left out by one gospel writer are often filled in by another writer to answer questions raised by the first. This provides good evidence to conclude that at numerous points the authors of the gospels were accurately and independently reporting actual events rather than merely copying one another or engaging in creative myth-making.
In this video, Dr Peter Williams presents new and old evidence that the Gospels are eyewitness accounts, drawing attention to details that would be very difficult to get right otherwise. The lecture was given at Lanier Theological Library and lasts for about 50 minutes, followed by 10 minutes of Q & A.
The book Dr Williams mentions, Jesus and the Eyewitnesses: The Gospels as Eyewitness Testimony, is available on Amazon.