One of the perennial questions about Christianity in Thailand is why the church has traditionally grown so slowly compared to other countries where Protestant missionaries arrived around the same time. Ultimately, we don’t know for sure why the church grows more slowly or more quickly in a given place. The Holy Spirit blows where He wills and we don’t know where He will move or when (John 3:8). However, God does use people and methods in his work. So, from a human perspective, it is worth considering some of the factors why church growth has been slow in Thailand.
A primary reason for slow church growth has been a strong association of Buddhism with national identity. This has been true for hundreds of years but received a great boost in the early 20th century when Buddhism began to be strongly promoted as a mark of national pride. Thai leaders were eager to modernize their country in the areas of education, medicine, communication, transportation, etc. but becoming more modern did not mean becoming more secular. Buddhism has always been retained as a force for unifying the people of Thailand. As the Thai say, “To be Thai is to be Buddhist.” In China and Korea, which have both seen strong church growth, no single religion has been tied to being a loyal citizen. The strongest church growth in Thailand has been in the North where minority tribal groups with their own cultural identity have been historically influenced more by local animistic beliefs than Buddhism.