When the catholic church misunderstand his intentions, a simple devout have to endure the aggravating opposition if he is to fulfill his vow. –The given word

He has to fulfill his vow, and carry heavy cross (like Jesus) to the church's altar.

Hmmm. Sounds tricky indeed. Maybe bring it back to basics? First: What is your protagonists main action?

Hmmm this one is become trickier than I thought originally...

When a stubborn Father block the church entrance, a simple devout have to make sense of the ensuing confusion with press, church and population if he is to fulfill his vow.

And it is not looking good yet... There is quite a few elements that is left out of the logline (and probably should) such as the cultural context of Brazil at the time. For instance, the rivalry between Catholic Church and african religions. One of the reasons the Father gets so pissed off is that his understanding that he made a vow to a pagan saint, not Saint Barbara, and so on..