St. Paul speaks of the mystery of Christ and his work in today’s passage. That mystery is Christ himself and his work is to include the Gentiles alongside the Jews as the people of God and inheritors of the promises to Abraham. With this is the reality that it is through the Church that the mystery of Christ is revealed and the wisdom of God is made known. And so, even today, the Church gathered in worship is revealing the work of Christ to bring to us the promises of God in Christ for us!
Image: Christ Glorified in the Court of Heaven by Fra Angelica. Public Domain. Image location: https://commons.wikimedia.org/wiki/File:Beato_angelico,_predella_della_pala_di_fiesole_01.jpg
www.gracegastonia.com/sermon-blog/2021/7/25/the-mystery-of-christ-and-the-church-ephesians-3