Summary: 1) United in God’s Kingdom (Ephesians 2:19a) 2) United in God’s Family (Ephesians 2:19b) 3) United in God’s Temple (Ephesians 2:20–22)
Thousands of people each year make the dangerous sea journey from North Africa to Europe's Mediterranean coast, often aboard vessels that are poorly equipped for the trip. Many of them attempt the voyage to flee war and poverty in Africa and the Middle East. A group of passengers, consisting of 105 people, left Libya on April 14th in a rubber boat. Militant Muslims, who were among the migrants trying to flee from Libya to Italy in a boat, threw 12 of their fellow passengers overboard. Witnesses of the incident testified that the perpetrators had committed this crime because the victims were followers of Christ. According to tearful witnesses, a dispute broke out when a Nigerian Christian man prayed for salvation as the boat moved out to sea. Other passengers on the voyage told police that they themselves were spared "because they strongly opposed the drowning attempt and formed a human chain." (https://www.vomcanada.com/News-Articles/)
The unity of believers is not a feel good attempt or mere theological construct. It is a life or death necessity in an increasingly hostile world. Physical threats are backed by evil spiritual forces that try to destroy the unity of the Body of Christ. Satan sows the seeds of discord in an attempt to stir up strife and cause division.
Believers that have been brought together by the work of the Holy Spirit can ignore, frustrate or embrace this unity. If we think we can tackle the world on our own, then apart from the pack we are easy pickings from prey. We can frustrate the work that the Spirit has already done by attempting seconding guessing motives or showing distain for others. To embrace this unity is to cultivate what the Holy Spirit has already created. He creates life. Our job is to create an environment that this may flourish.
Paul closes his discussion of the marvelous unity of the Body of Christ by giving three metaphors to illustrate it. In the picture of 1) Fellow Citizens(Ephesians 2:19a) he shows how Jew and Gentile have become part of the same kingdom. In the picture of 2) God’s household (Ephesians 2:19b) he shows how all believers are one spiritual family in Christ. In the picture of 3) A HolyTemple in the Lord (Ephesians 2:20–22) he shows that all believers are together a habitation for God.
1) United in God’s Kingdom (Ephesians 2:19a)
Ephesians 2:19a So then you are no longer strangers and aliens, but you are fellow citizens with the saints (and members of the household of God) (ESV)
Whether believers were previously apart from God and His people or whether they were previously nearby, they became one in Jesus Christ. Whether they were former strangers and outcasts or former aliens and guests, all believers in Christ become fellow citizens of God’s kingdom with the saints—the believers from every age who have trusted in God. Strangers/Foreigners are people outside a country or community, with no special rights or privileges. The word for aliens (paroikos) often is translated as “sojourners,” a term that accentuates the transient nature of the Gentiles. In that condition they were like aliens with an “immigrant visa,” which granted them limited rights and privileges, but not full citizenship or permanent residency (Patzia, A. G. (2011). Ephesians, Colossians, Philemon (p. 200). Grand Rapids, MI: Baker Books.).