I'm not a Tennessean but the law should be upheld in that only professionals in the areas of science and tourism should be allowed to safely handle poisonous reptiles. Luke 12:4 does give adequate theological and societal reasons for not handling deadly snakes. The texts mentioned from Mark 16:17-18 were assignments given to the early, original Apostles in establishing the Church/Kingdom of God. They were not meant as a commandment for testing a person's faith or as evidence of their faith. This miraculous, intervention of natural law ceased to exist after the Apostolic age. The language of the text in Luke 16:17-18 however was not meant to be understood as "metaphor, hyperbole", or symbolic. Acts 28:1-6 is evidence of this intervention of natural law as referred to in Luke 16:17-18 by the Apostle Paul.