It is so clear that Jesus speaks of whoever believes, but when the Christians fails to prove it, they will try to escape of any way suit them! When any Christian preaches, he will refer to those verses of Mark that to spread the good news to all creation. And when they go to the illeterate indegiones people and they learn their own language, they bluf those poor people by claiming that they gained it by the Holy Spirit as Jesus marked the believer of new tongue, but when you challenge them with another sign which is of the deadly poison, they will escape by any apologizment, such as you can not test God or it is interpolation or it is only valid for early apostles.
But the most amizing answer is the last statment. Because Jesus speaks of those who believe. Who ever believe and baptized!!
You can feel how do they feel when you ask them such question, especially, when you find Gary Bee gives a hot thank for Vic just because he helped him how to escape from that charllenge. LOL!
WHAT A HYPOCRICY!! Believe me Quath if you test any Christian in this earth about his salvation, he would be failed by only one test!!