Radical skepticism is no more critical than is credulity.

The principal problem is that textual data and material remains are often incomplete and sometimes lack adequate context, in order to know precisely how they correlate. Sometimes all we can say is that the textual data and the material remains are probably related but how exactly can't be said until additional discoveries are made.

Archaeological evidence provides significant help in interpreting the Gospels. In a sense, archaeology is an exegetical tool. To ignore the evidence of archaeology would be almost as irresponsible as making no appeal to the original text. The archaeological evidence is a vital component in the context of Scripture.

The Gospel of Thomas, greatly favored in some circles, is ignored by archaeologists, primarily because it exhibits no verisimilitude. It tells us nothing about the historical Jesus and the world he and his disciples lived in. I've heard it said, that if all we had was the Gospel of Thomas, would we even know that Jesus was Jewish?

Radical skepticism is no more critical than is credulity.

All archaeologists in Israel and Palestine make use of the New Testament Gospels. They do this because the Gospels exhibit verisimilitude. In short, the Gospels help archaeologists know where to dig and they help archaeologists understand what they unearth. The 2nd-century Gospels and Gospel-like writings rarely exhibit verisimilitude, so archaeologists rarely appeal to them.