Ephesians 3:4-6

so that whenever you read it you will be able to understand my revelation and insight into the secret mystery of the Messiah. There has never been a generation that has been given the detailed understanding of this glorious and divine mystery until now. He kept it a secret until this generation. God is revealing it only now to his sacred apostles and prophets by the Holy Spirit. Here’s the secret: The gospel of grace has made you, non-Jewish believers, into coheirs of his promise through your union with him. And you have now become members of his body—one with the Anointed One!