Final answer:
The main idea in your participation in the mission of Christ is salvation through faith.
Step-by-step explanation:
The main idea in your participation in the mission of Christ is salvation through faith. Christianity emphasizes that salvation is obtained by believing in Jesus Christ as the savior and following his teachings. This belief in salvation through faith forms the foundation of the Christian faith. In Christianity, the central message is often focused on the belief in Jesus Christ as the savior and the means of salvation through faith in Him. This includes understanding Christ's teachings, embracing His sacrifice for humanity, and trusting in Him for eternal salvation.