I was in a play about it. It comes from the verses:
And these signs shall follow them that believe: In my name shall they cast out devils; they shall speak with new tongues. They shall take up serpents; and if they drink any deadly thing, it shall not hurt them; they shall lay hands on the sick, and they shall recover. (Mark 16:17-18)
They handle rattlesnakes, drink cyanide, and demonstrate their faith. They lift up the poisonous snakes as a demonstration of their faith. There is a really great doc about it, where the whole chuch, including kids, are handling the rattlesnakes, throwing them to one another. The Reverend says, "If God wanted the serpent to bite me, he would" and immediately after, the snake strikes. the Reverend had been bitten over 50 times previously. His arm swelled really, really big, and he said to the documenters, "No, don't come to my aid now when you mocked me before."
I felt for the church. People looked upon them as freaks, and if this is what you knew, how you grew up, it would seem normal to you. Speaking in tongues is second nature for me, but brings up huge amounts of protest in followers, quoting that it should only be used when there is an interpreter, that it serves no purpose if you don't understand, that it isn't scriptural, etc.
And what is this terrible thing that I am doing? Allowing the Spirit of God to intercede for me because I don't know what to rightly pray for. Speaking in tongues itself, while unusual, wasn't the scarey possession I thought it would be, and was far more secondary to the very real sense of God's Presence that I had never felt before, a feeling that I had changed a little, that I was suddenly more attune to the spiritual word, and that I really understood that God truly loved me, something that so many people doubt, thinking themselves not good enough for God, thanks to members of the church, probably.
At the same time, it seems like they are asking for trouble, that they are testing God. I think they see it as testing their own faith, but it's like leaping from a building to prove to God that you trust him. Cross the bridge when it comes to it, but don't create danger. Trust in God when danger presents itself.
What was strange about the service was that the snake didn't bite as much as you would think they would. I think they bit our of fear and anger of being thrown around, lifted up, or mishandled. Even a dog will do that.
Should it be legal? Well, people shouldn't be put in jail, certainly. I just think there are far more productive ways to show your faith to God, such as the laying on of hands, praying in earnest for peace in the world, for a healing of the Body of Christ (The Church), for bravery in a world that operates on fear and insecurity and self doubt. It would be far more productive to pray together and ask what we, his servants, can do for his glory, in thanksgiving for the love he grants us without asking anything in return, rather than what God can give us. We should be praying for humililty, to admit that we are sinners, to lower ourselves before others in humbleness, instead of implying that we are above others, or without sin, or worse, deserve God's love and salvation, implying that others don't until they meet our approval and standards.
I never really was an "The End is Near" kind of person, but I do believe that signs are going to begin appearing quite frequently now, and if being able to handle a serpent is one of them, do you have the faith to do it? Do you trust the Scripture and God enough, were you in a situation where you HAD TO handle it?
I don't have that much faith in myself.