It didn’t say that it was for the believers or the Christians. This is why the Bible says that He is afraid of you who are seeking after a sign. So, I could ask why would the Church world or the Christians say that tongues are a sign or an evidence of the gift of the Holy Ghost.
Ndiyo maana Biblia inasema anashangazwa na wanaohitaji ishara. Kwa hivyo, ningependa kuuliza ni kwa nini kanisa duniani au wakristo wanasema kwamba ishara au dhibitisho la Roho Mtakatifu.