The term 'New Testament Skeptic' refers to Thomas, a figure in the Bible who expressed doubt about Jesus' resurrection. He is best known for his famous statement, 'Unless I see the nail marks in his hands and put my finger where the nails were, and put my hand into his side, I will not believe it.' Thomas is often seen as a symbol of doubt and skepticism, and his story serves as an example of how faith can be strengthened through doubt.