The grown of Pentecostalism this 20th century has been grate to the kingdom of God. There are so many reasons that contribute to these growth. I believe that it is the baptism of the Holy Spirit and it is through we cannot talk about the growth without the baptism of the Holy Spirit it will be difficult for every Pentecostal believer to think that the growth is no the work of the Holy Spirit and the evidence is the speaking in tongues if you receive the holy spirit baptism. The speaking in tongues is one of the experience that reshape our thinking. And sometimes because of the Holy Spirit many tend to join and not to be observers.
I believe that there is that growth is the wish to portion our values with non-Pentecostal to participate of the movement of the spirit. For instance, Pentecostal churches are churches which established deliberately to attract more into move.
Pentecostals attract people by their embrace and celebrate their unique values and expansion
Pentecostal influence around the world is grate and it attract more people into Pentecostalism
Many people also drawn into this church because of the excitement abound in this Pentecostal churches entertainments value of the service also cause a lot of individual coming to join.
The fruits of God work also attract a lot into the move. Seeing all the healing, expressive charges, and prophecies entices people into it consequently causing growth.
The promise of health and prosperity has contributed to this growth