| Honorific Prefix: | Ephorus (Emeritus) |
| Darwin Lumbantobing | |
| Native Name: | instead.--> |
| Honorific Suffix: | The Right Reverend |
| Order: | 16th |
| Office: | Ephorus of HKBP |
| Term Start: | [1] |
| Term End: | [2] |
| Predecessor: | Willem Tumpal Pandapotan Simarmata |
| Successor: | Robinson Butarbutar[3] |
| Birth Date: | August 22, 1956 |
| Birth Place: | Kisaran, Asahan Regency. North Sumatra, indonesia |
| Spouse: | Mantasia Br. Siahaan |
| Children: |
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Lumbantobing was born in the city of Rawang, North Sumatra, Indonesia. He was raised in a Christian family and was heavily influenced by his faith from a young age. He received his education in local schools and later studied theology at a seminary in STT HKBP Nommensen Pematangsiantar. He graduated with honors.
After completing his studies, Lumbantobing began working as a pastor within the BCPC. He quickly progressed through the ranks and was appointed as the Ephorus of the church in 2016. As Ephorus, Lumbantobing was responsible for overseeing the spiritual and administrative aspects of the HKBP. He is also actively involved in community outreach and social welfare programs. Under Lumbantobing's leadership, the HKBP has seen growth in terms of membership and influence. He has received recognition for his contributions to the HKBP and society at large. In addition to his work within the HKBP, Lumbantobing is also a public speaker and author.[4] He has written several books on theology and spiritual development. Lumbantobing has received several awards and accolades in recognition of his contributions to the BCPC and society as a whole. He is considered to be one of the most influential leaders in the Christian community in Indonesia.