Before the ascension of Jesus christ he established a church under the headship of the desciples. The holy spirit was their guide. In times of conflict and controversies they formed councils in which they met and established a dogma as is seen in the Acts of the apostles on the debate on Jews vs Gentiles. From such councils the church's doctrine was established. Hence the doctrine of the church was formed over time by coming together of anointed men under the leadership of the holy spirit. However, the trend in pentecostal churches is for one man to form a church and his own doctrine and then claim to have had divine revelation. No wonder they tend to modify their practices as the 'one man's' experiences and thoughts change. The church is supposed to be a system passed down from time.