Lokky S. Tjahja received his calling and visions from God in 1990, and started his ministry through “Bukit Zion” or Mt. Zion in 1991. As a Founder and Senior Pastor of Mt. Zion Church, Lokky S. Tjahja and his wife, Siswanti Mayandari, B.A. still uphold their calling that God has blessed them with from the beginning; which is having a meaningful life for others, so the Lord’s name alone is glorified. Their calling focuses on the family reconciliation, how to live a firm spiritual life that can bless other people’s lives.