What does 2 Corinthians 4:10 mean?

Scripture explains clearly that those who carry the gospel are just fragile vessels that contain a powerful truth. As in Paul's case, it is God's power, not their own, that keeps them going in the mission to take the gospel to the world.

They have been afflicted, perplexed, persecuted, and struck down, but they have never been crushed, in total despair, abandoned, or destroyed. They continue to carry the gospel to all who will hear. God allowed their physical bodies to continue to reflect the death of Jesus in His physical, earthly body that was crushed to pay for the sin of humanity. However, the bodies of Paul and his co-workers had been spared from being crushed (2 Corinthians 4:8) to show the life and power of Jesus in them, as well.

Paul's main point is that he and his friends did not proclaim themselves or carry the message in their own power. They proclaimed Christ in their weakness and suffering to show His power in and through them.