Paul, an apostle of Christ Jesus by the will of God, To the saints who are in Ephesus, and are faithful in Christ Jesus: Grace to you and peace from God our Father and the Lord Jesus Christ.
(v.1) Paul, an apostle
Through this he establishes his authority as an apostle. He is stating that he is not writing this letter as himself, but rather as an apostle, which is an office given by God alone, not man. This is giving him legitimacy for everything that he is about to say.
Let us always bear this in mind, that in the church we ought to listen to God alone, and to Jesus Christ, whom he has appointed to be our teacher. Whoever assumes a right to instruct us, must speak in the name of God or of Christ.
(v.1) By the will of God
With this, he is letting the reader know that he is an apostle because God has willed it.
