Two days ago, the Washington Post published a lengthy story on snake-handling pastor Mack Wolford, who died Sunday night from, well, a snakebite he got in church. Wolford cited Mark 16:17-18 as the source for his practice of handling rattlesnakes, water moccasins, copperheads and other venomous snakes. And Mark 16:18 does seem clear: "they will pick up serpents with their hands; and if they drink any deadly poison, it will not hurt them." There's only one problem: Mark 16:18 is not in the Bible. The last 12 verses of Mark's gospel were added sometime after the original gospel began to...