BBC: Ephesians 1:1-2
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. – Ephesians 1:1-2
The importance of introductions in epistles is general knowledge. Paul affirms and establishes his authority as messenger of the Messiah. This affirmation is not from Paul’s natural ascension to a position but by God’s determined “will”.
Some of the earliest texts do not include the destination “Ephesus”. Though a helpful context for the culture, it cannot be depended upon for serious exegetical difficulties. Instead the focus should be placed on who is being spoken to descriptively: the “set apart” of Christ Jesus. This is the church (1 Pet 2:5) destined for militant faithfulness. Those who participate in the church find themselves the recipients. Those who depart from the church remove themselves from the promises and blessings.
The conclusion to the introduction is a standard for the Scriptures. The conclusion, like the welcome, points beyond Paul to the source of spiritual blessing.