# For this reason I, Paul, the prisoner of Christ Jesus for you Gentiles—

Paul started a sentence, but he did not finish it.

# For this reason

This refers to what Paul was speaking about in chapter 2. Alternate translation: "Because of God's grace to you Gentiles" or "Because God has made you Gentiles members of his household"

# the prisoner of Christ Jesus

Paul was in prison because people did not like him preaching about Christ Jesus. Alternate translation: "the prisoner for Christ Jesus" or "the prisoner for preaching about Christ Jesus"