For this reason, I, Paul, the prisoner of Christ Jesus for the sake of you Gentiles— Surely you have heard about the administration of God’s grace that was given to me for you, that is, the mystery made known to me by revelation, as I have already written briefly. In reading this, then, you will be able to understand my insight into the mystery of Christ, which was not made known to people in other generations as it has now been revealed by the Spirit to God’s holy apostles and prophets. This mystery is that through the gospel the Gentiles are heirs together with Israel, members together of one body, and sharers together in the promise in Christ Jesus (Ephesians 3:1-6).

Most Bible scholars believe that, with verse 1, Paul intended to begin his prayer which concludes the chapter. But he interrupts himself to write about the role he’s been given in God’s great work of redemption. Because of this role, he has become a prisoner in a Roman jail. Imprisonment is no big deal for him, it simply offers a different venue by which to carry out the mission he has been given.

Paul’s role of administering God’s grace is his concern in these verses. He calls it “the mystery of Christ.” This mystery is what all those saints in the litany of faith from Hebrews 11 were looking forward to. It is something that used to be hidden, but which now in Christ has been revealed.

This ‘mystery of Christ’ has to do with these Gentiles (non-Israelites). What God has revealed is that in Christ these Gentiles are now included in God’s great work of redemption. That is, the work begun in and through Israel as recorded in the Old Testament. To know what God is doing in Christ, we need to be familiar with that story.

But, of course, the fact that the Gentiles were going to benefit was already known long ago. God had promised Abraham, “all peoples on earth will be blessed through you” (Genesis 12:3). So, what new thing did Paul learn?

The very same thing that all of us learn at the heart of the Christian faith: that in the cross of Christ, all things are reconciled, including Jews and Gentiles. When Paul says the word “mystery,” he very often means “the cross of Christ.”

When Christ tore down the “dividing wall of hostility” through his cross—he not only took the penalty for our sin and defeated death—he also joined once disparate peoples together. In his cross, he overcame great divisions. The people of God is now composed of both Abraham’s descendants and everyone else who believes. They all become “the church” together.

In an age in which division perforates the church, it is important for us to hear this message of the gospel. The divisions we feel are not primarily about Jews and Gentiles (though that has recently arisen again as a point of contention)—but about politics, ethics, and national identities.

But no matter ones’ politics, ethics, or national identities—all those who come to Christ in faith are nevertheless made into one body. Through the gospel of the cross of Christ, we all become “heirs together with Israel, members together of one body, and sharers together in the promise in Christ Jesus.”

We are, therefore, to live unity. We are not asked to like other Christians, to be like them, or agree with them—but simply to recognize that humbling fact that we are one with them as sharers of the same Lord and the same benefits. This is indeed a great mystery. But it is the mystery of the cross, the mystery we have been given. May God’s kingdom come and will be done—even in this, on earth as it is in heaven.

As you journey on, go with the blessing of God:

Now to him who is able to do immeasurably more than all we ask or imagine, according to his power that is at work within us, to him be glory in the church and in Christ Jesus throughout all generations, for ever and ever! Amen. (Ephesians 3:20-21)