Castle Hill Baptist Church maintains a strong commitment to seeing the Gospel of Jesus Christ proclaimed locally, throughout Australia and overseas.

CHBC provides on-going support for Christians serving in a range of settings in Australia and overseas. Some of these people are members of the CHBC congregation who have entered mission service while others are people whom CHBC has been led to support.

Currently, members of the Mission Family are serving in South America, East Asia, South East Asia, the Pacific, Europe and Australia. The roles are as varied as lecturing in a theological college, translating the Bible in a tribal setting or supporting and equipping the establishment of national Churches.