Unity Sermon

The following sermon I preached at 1st Presbyterian Church on March 17,2024. Technology failed us and live streaming failed us. I thought it good for all to read so I have posted it in its entirety here. 


Good morning, my brothers & sisters in Christ. Today’s scripture is all about the unity of believers. We

 will need God’s help to understand and put into practice what we find in these short verses. Please join

 me in a time of prayer for our understanding of the truth of the Gospel:

            Heavenly Father, we come to you this morning broken, hurting people. We admit we have deep divisions in a church you meant to be united. Forgive us for having a mindset of division rather than one of unity. Open your word to us today so we may hear and obey your call to be united in Christ. Amen.

Unity. That is the theme of Jesus’ prayer in these verses from John, which we just heard this morning. In it, Jesus declared that He wanted all His followers united in their struggle to follow Him. It sounds easy enough, but it has proved notoriously difficult for the people of God to pull off. According to one survey of the state of religion conducted in the United States, there are over 2,000 Christian denominations in the United States alone. The most recent example of a significant church split occurred in the United Methodist Church. Over 7,600 churches left that denomination between 2019 and 2023. That’s one-quarter of the denomination gone. Most have gone to a new denomination, The Global Methodist Church. To put that into perspective, there are approximately 8,700 congregations in our denomination, the PC(USA). This split creates a new denomination with almost as many member congregations as the PC(USA).

            Any way you slice it, our display of unity needs to be more robust on an institutional level. But is Jesus speaking of institutional unity or doctrinal or practical unity in these verses? Does it matter? First, unity is a reflection of God’s person. Deuteronomy 6:4 says, “Hear O Israel: The Lord our God, the Lord is one.” The Jewish religion has a few factions but is not nearly as fractured as Christianity. Our God is one God, and there is no other. This fact is stressed throughout the scripture. In just the New Testament, seven verses explicitly state the oneness of God. Including the verses read this morning. The other scriptures are Mark 12:29,32 John 1:1, 17:11, Galatians 3:20, and 1 John 5:7. Let us consider whether institutional unity or unity of belief and practice is intended in these verses this morning.

            Let us unpack the verses from John 17, which we examine this morning.

            In verse 20, Jesus is praying for those who believe in Him based on the witness of scripture read and preached. This includes all who have been followers through the ages up to this moment, and Jesus is still praying for us today. God’s firm desire is that we become one with Him just as we were at the beginning of creation. The problem of our sin notwithstanding, through Jesus Christ, through the power of the Holy Spirit, we can learn to live in that unity again. God has been working throughout history, as recorded in the Hebrew scriptures and the New Testament writings, to bring harmony between God and humankind. Therefore, we can trust God to be with us through our struggle for unity in the church. Jesus, the Holy Spirit, and the Father are united in love, one God in three persons. Our God is mighty to save, heal, rescue, and restore the world we have broken through our sins. Let us realize that our institutional divisions do not necessarily mean doctrinal or practical divisions.

            John records Jesus' desire that we be unified in Him in verse 21. Just as the Holy Trinity is one, so should we be one. One reason the world is walking away from the church in America and throughout the Western world is our disunity. We often appear as just another particular interest group promoting our agenda. We seldom can give a coherent answer when the world asks why we take the positions we do on cultural and social issues. Jesus promises that the world will see and respond positively if we are unified in him and can explain our positions positively. The majority of the church leaves the task of explanation to the “experts” called apologists and does not engage in the controversial topics of the day. Yet Peter says in his letter that we are always ready to defend our hope in Jesus, but we must do it with gentleness and respect. People view apologetic discussions as a waste of time. “No one was ever saved through argument,” they claim. The world needs more of Jesus' power and grace to be displayed today than ever in human history. Today, let us not despise the value of apologetics. Most churches do not do apologetics well, if at all. Help us to realize that apologetics done in the spirit of gentleness and respect can reach lost souls for Christ and build up the church for which Jesus gave His life.

            Verse 22 is crucial because it speaks of God giving His glory to the original disciples and the rest of the believing community through them. “Glory commonly refers to the manifestation of God’s character or person. Jesus has mediated the glory of God personally to his first followers and through them to us who believe on account of their message. And he has done all of this that they may be one as we are one.”[1](emphasis in the original) God will not stop until unity among believers is a settled fact.

            The final verse of our text for today spells out the fullness of the unity that God desires for us. This verse declares that in the same way, the Father loves the Son; he loves us and desires us to be one with each other and one with Him. In this verse, Jesus declares that the Father and the Son love the people who have believed in them with the same intensity of love that the Trinity has for one another. This is a miracle and a promise no Christian should take lightly. Those of us who follow our Savior, Jesus, are loved by the Father in the same way that the Father loves the Son. Indeed, we are made into adoptive children of God, and we enjoy all the rights and privileges of adoptive children. Jesus spells out that the Triune God loves those who believe with the fullness of the love the members of the Trinity have for one another. Let us now focus on why Christians often fail to be filled with this love and learn to overcome the obstacles the flesh, the world, and the devil throw in our way to disrupt unity.

What is the reason we Christians find it so hard to be united around our God? The main reason for our alienation from God is given to us in Genesis chapter 3. This chapter, which we all know as the fall story, contains the seed from which all division and alienation come. Humankind rebelled against the one commandment God had set for them and has been hiding from God ever since. Genesis 3:8 explains, “And they heard the sound of the LORD GOD walking in the garden in the cool of the day, and the man and his wife hid from the presence of the LORD GOD among the garden's trees.” We have been hiding from God, attempting to conceal our sins ever since.

            Once we had become alienated from our creator, it was a short step to becoming alienated from each other. Genesis 4:7-9 explains Cain and Abel’s story—the tragic story of the first murder. In the 21st century in America alone, we run a body count in the dozens if not hundreds of murders on any typical weekend across the country. Brother killing brother often for no discernable reason. And still, we ask, “Am I my brother’s keeper?” We in the Christian church rarely actually murder those who disagree with us on issues of doctrine and policy; we just run away and hide from each other.

            We must ask, what are God’s purposes for wanting unity within His body and church?

            First, God wants to bring together all people. God did not create humankind with various racial groups. We are all one race. The human race. When we look at others, we are to see another human being created in the image of God. No matter how banged up and damaged we or they are. It is sad, but it is still true that the most segregated time in American life is Sunday mornings. We divide by race, language, ethnicity, and so on. What a beautiful witness to the world if we could all worship together on Sunday mornings.

            Second, God wants to unite all people under His rule. God’s word is full of exhortations for the whole world to be united under His authority. The book of Revelation and elsewhere declares that one day, all the nations of the earth and all the peoples therein will worship God in the new Jerusalem. We have this promise and can count on the Lord to bring it to fruition. As the Psalmist declares in Psalm 72:8-11, “May [God] have dominion from sea to sea, and from the River to the ends of the earth! May desert tribes bow down before him, and his enemies lick the dust! May the kings of Tarshish and of the coastlands render him tribute; may the kings of Sheba and Seba bring gifts! May all the kings fall down before him; all nations serve him!”

            Jesus especially desires unity within His church. The above-listed examples are just some of the things that explain why God desires all believers to be of one accord when it comes to following Him. One issue the church needs to deal with is the lack of seriousness some within her ranks treat being a disciple of Jesus. To be a disciple of Jesus might be better understood as being an apprentice of Jesus. An apprentice enters training in a trade to learn from those who are experts at that trade. So, it was with the rabbis and their disciples. The goal of our training, per Jesus, is to become like Him in every respect (except deity). Jesus himself declares that a disciple will be like the teacher when fully trained.

            For Jesus, discipleship is not about getting you into heaven than; it is about getting heaven into you. As C S Lewis wrote, each day, we are turning into an immortal horror or an eternal, everlasting splendor. (The Weight of Glory) The greatness of Christ is not that He became like us but about us becoming like Him. Giving our life in service of Christ is less of a transaction and more about transformation. As we become better and better disciples of Jesus, we make it easier for others to see and believe that becoming a Christ follower makes a real difference in a person’s life. And the more likely they are to take the first step of discipleship.

            The big question for us as a 21st-century church is how we display unity when we are clearly divided on so many issues. First, we must realize that it took two thousand years to get this divided, and trying to accomplish absolute unity overnight is impossible without a miracle of God. Putting toothpaste back in the tube is impossible, so putting the church back together will be very challenging. However, we have one thing going for us: the all-conquering love of God. That love that unites us across all lines of division we may draw for ourselves.

            Given Jesus' prayer for unity from John’s gospel, which we heard read this morning, we know His will for the church is to be unified. So, we must learn Jesus’ way of love. We must learn to love each other even when we disagree vehemently on specific topics. We cannot let minor things divide us anymore. The color of the carpeting is what it is, and we will all have to live with that while exploring areas we agree on and moving forward with those issues to bring the kingdom of heaven about here on earth.

            We need to be aware that the church has always had its controversies. Even in the book of Acts, the church had to devise creative solutions to real problems and issues. From the feeding of the Greek widows to Paul and Barnabas disputing John Mark’s usefulness in ministry, problems arose, solutions were found, and peace was kept. Paul’s letters, especially the correspondence with the Corinthian and Galatian churches, speak to many diverse issues that 1st-century churches dealt with. Indeed, God will grant us enough wisdom to see our way through current controversies.

            What to do about the reformation? As I write these words, the noon prayer bells are ringing at the local Roman Catholic church, and I pause to pray a simple prayer. Getting over this hurdle will be significantly more complex than repairing relations within Protestantism. The rupture has deepened over the centuries, and each has become defensive about their faith's “distinctive” facets. Healing the Roman Catholic and Eastern Orthodox positions will also be a trying problem in search of a creative solution. Let alone bringing the Roman Catholic church back to unanimity around specific doctrinal issues. Healing the rift between various Orthodox positions, say the Ukrainian and Russian Orthodox Churches, also represents a significant hurdle to unity.

            The bad news on unity looks daunting from a purely human point of view. Without God’s help, this situation would indeed be impossible to heal. The good news is that we have the promise of God’s help. The Holy Spirit stands ready to help us address these issues and many more that we do not have time or space to mention in this short message.

            I suppose this sermon has made some of you worry or despair about ever finding unity. Set your mind at ease with this thought. Just as God the Father loves God the Son, He also loves us, His precious creation. None of our division and sin has surprised Him in the least. He loves us despite our faults and failures. He created this universe to create peace within the church and, through the church, bring healing and peace to all humankind. He longs to see us love one another as He has loved us. He wants us to be extensions of His love for this lost and lonely world. So be of good cheer. God loves you. He died for us on the cross to prove it.

            Even without institutional unity within the church, we must recognize that Christ’s death and resurrection unite us. All who name Jesus and declare Him Lord over their lives already have the seed of gospel unity planted within them. We must nurture and care for that seed to grow into full bloom as we live with our brothers and sisters in the worldwide church.

            The first churches were not part of any denomination or group. Each city had its autonomous church, and some towns even had more than one church. Yet they were all united by their faith and belief in Jesus as the risen Lord and Savoir. Following the reformation in the 1,500 and 1,600s, we find divided churches—some churches following Luther, some Calvin, some Zwingli, and some remaining loyal to the Roman Catholic or Orthodox church. As time passed, these primary divisions further divided God’s people. Until, now we have over 2,000 separate Christian denominations today; however, as divided as we are at a purely human level, we must recognize that if a church names the name of Christ as Lord, sits under the preaching of the gospel, and takes part in the sacraments, we are united spiritually in the body and blood of our Savior. That unity should be taken seriously because what Satan and his minions fear more than anything else is that the churches that name the name of Christ will set aside their petty divisions and act as a unified force in the world. I believe when that happens, the gates of hell will fall with a mighty crash. And I do believe that that day will come. God willing, sooner rather than later.

            Our scripture lesson this morning calls us to such unity. The church must heed the call and reject the divisions that the devil has planted in believers' minds and hearts. Jesus longs for His church to be one body dedicated to one purpose: bringing the kingdom alive in this world. As we pray each Sunday in the Lord’s prayer, “Thy kingdom come on earth as it is in heaven.” Let us leave this place today, united in the mission to make disciples and grow the kingdom on earth.

            Let us pray:

            Heavenly Father, through your son Jesus’ life, death, and resurrection, you have set in motion your plan for unity in the church and the world. Please help us to do what we can so that the world can be full of your shalom and peace. Grant us minds, hearts, and hands willing to do your work of reconciliation between all people, beginning with your church here on earth. Amen.



[1] D. A. Carson, The Gospel according to John, The Pillar New Testament Commentary (Leicester, England; Grand Rapids, MI: Inter-Varsity Press; W.B. Eerdmans, 1991), 569.

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