to which I was appointed a preacher and an apostle (I am telling the truth in Christ, not lying), a teacher of the Gentiles in faith and truth.

 (iii) He is an envoy. An envoy is one whose duty is to commend his country in a foreign land. An envoy in the Christian sense is therefore one who commends the story of Christ to others. He wishes to communicate that story to others, so that it will mean as much to them as it does to him. 