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.
a teacher of the Gentiles -- Underscores the universality of the gospel message and God’s desire that all people be saved (see note on 1 Timothy 2:4). Paul’s reminder to the Ephesian church that Christ came for both Jewish people and Gentiles.