I don't have the gift of tongues but surely someone would know whether they received that gift spiritually or not. I do believe in the gift of tongues, not just because Derek Prince said's so but I believe Rainy, she is no liar, she is very sincere. I have got to know her very well for a long time now and she is truthful and has a kind heart, there is nothing false about her and you should know this after knowing her for so long. If Rainy says the gift is real then I know it is real.