What would you do IF someone aimed a gun at your head over your Christian profession? Would you deny Christ to save your natural life? Remember what Jesus taught:
For whoever wants to save his life will lose it, but whoever loses his life for me and for the gospel will save it. What good is it for a man to gain the whole world, yet forfeit his soul? (Mark 8:35,36)
Have you properly understood Acts 1:8?
But you will receive power when the Holy Spirit comes on you; and you will be my witnesses in Jerusalem, and in all Judea and Samaria, and to the ends of the earth. (Acts 1:8)
NOTE: The word translated witnesses there actually means martyr, in the Greek. Is that how you perceive the Christian life?