Question: Please discuss the role of Christians in the world today. 1. Role is one of separation from that which is sinful (2 Cor. 6; Jno. 15; Jas. 4; 1 Jno. 2:15-17). 2. The Christian's song is: This World Is Not My Home Phil.3:20. 3. Not of the world but in the world; in the world for a purpose Matt. 5:13-16; Phil. 2:14-16; Titus 2:10; 1 Cor. 9:22.