They believe that the chief purpose of the gift of speaking in tongues is to manifest the Holy Spirit being poured out upon them just as on the day of Pentecost (Acts 2), which was prophesied by Joel (Acts 2:17).
Naniniwala sila na ang pangunahing layunin ng kaloob ng pagsasalitasa ibang wika ay upang ipakita ang ebidensya ng pagpuspos sa kanila ng Espiritu Santo gaya ng naganap sa Araw ng Pentecostes (Gawa 2), bilang katuparan ng hula ni Propeta Joel (Gawa 2:17).