Many well meaning believers mistake the tongues spoken when someone receives the initial infilling of the Holy Ghost with the gift of tongues spoken about in I Cor 12 and 14. The initial tongues a believer speaks in when he/she is born of the
Spirit is for a sign (see Mark 16:16-18) whereas the gift of tongues is to be used in an assembly and an interpreter should be present to ensure the whole assembly is benefited or edified. Acts 10 and 19 give two very good examples of believers
who spoke in tongues for the very first time and there was no interpreter present. Also, they spoke at the same time, which if it were the gift of tongues in operation, they would have been out of order…because 1
Corinthians 14:27 says: If anyone speaks in a tongue, let there be two or at the most three, each in turn, and let one interpret. In Acts 10 and 19, they all were speaking basically at the same time without an interpreter…obviously,
there was a different operation of the Spirit going on there…new believers were being born of the Spirit for the very first time.