Ephesians 1:1

Here is, 1. The title St. Paul takes to himself, as belonging to him - Paul, an apostle of Jesus Christ, etc. He reckoned it a great honour to be employed by Christ, as one of his messengers to the sons of men. The apostles were prime officers in the Christian church, being extraordinary ministers appointed for a time only. They were furnished by their great Lord with extraordinary gifts and the immediate assistance of the Spirit, that they might be fitted for publishing and spreading the gospel and for governing the church in its infant state. Such a one Paul was, and that not by the will of man conferring that office upon him, nor by his own intrusion into it; but by the will of God, very expressly and plainly intimated to him, he being immediately called (as the other apostles were) by Christ himself to the work. Every faithful minister of Christ (though his call and office are not of so extraordinary a nature) may, with our apostle, reflect on it as an honour and comfort to himself that he is what he is by the will of God. 2. The persons to whom this epistle is sent: To the saints who are at Ephesus, that is, to the Christians who were members of the church at Ephesus, the metropolis of Asia.

— Matthew Henry's Concise Commentary (public domain)