This cost him his family as his father tossed him out. His fiancee broke off their engagement. He went to his pastor friend and said "for the sake of Christ, I have lost my inheritance, my parents, and the girl I love. Since I have paid so much for my faith, i want it to be worth all it cost. I have decided to resign from the government service and to enter the ministry right away."
He ended up going among the Igorots... a fierce mountain people who fought and killed their way through life. Living among these fierce people for two years changed them completely, leading most of the people to Christ and from there Juan asked for a new mission. He wanted to work among the Kalingas as well... head-hunters and a fierce people that only groups of soldiers would approach.
He took his wife Lucia and so another group of Filipinos was changed.
The faith of one man changed two groups of people for the sake of the Lord.
Source:
Missionary Hero Stories.