Trevor Johnson and his wife, Teresa, are both registered nurses, and they serve a remote tribal group in the Papua region of eastern Indonesia. Trevor served five years as an active-duty army officer, is a grad of Reformed Theological Seminary, and is a candidate for the Doctor of Missiology (D.Miss.) from Malaysia Baptist Theological Seminary. He was ordained and sent out by his sending authority of Bible Baptist Church in Saint Louis and partners with Heartcry Missionary Society. In the lecture below, Trevor draws from his own experience and explains the nature of tribal missions, underscoring the ongoing need for missionaries to take the gospel to the still-unreached people groups in the world today. This lecture serves as part of the curriculum for Reformed Baptist Seminary's course PT 801 Missions.