Jesus spent the last night of his life celebrating Passover with the twelve apostles that had been a part of his three year ministry on earth and who were expected to carry on his ministry after his death. During what is now referred to as the Upper Room Discourse, Jesus focused his apostles’ attention on the essential elements of spiritual life. Jesus began with a reminder that his followers would spend eternity with him in a place that he was going to prepare for them (John 14:1-3) and then, went on to say that a Helper would come and remain with them forever (John 14:16). Jesus said of the Helper, “You know him for he dwells with you and will be in you” (John 14:17). Jesus’ statement that the Holy Spirit would dwell with his apostles and be in them was an indicator that they were going to be united with God in a way that was not possible before. Speaking of the day when his disciples would receive the Holy Spirit, Jesus said, “In that day you will know that I am in my Father, and you in me, and I in you” (John 14:20). The Greek word that is translated in, en (en) denotes a fixed position. “Christ is in the believer and vice versa, in consequence of faith in Him (John 6:56; 14:20; 15:4, 5; 17:23, 26; Romans 8:9; Galatians 2:20).” En also refers to “the believer’s union with God (1 Thessalonians 1:1; 1 John 2:24; 3:6, 24; 4:13, 15, 16)” and “of the mutual union of God and Christ (John 10:38; 14:10, 11, 20),” as well as, “of the Holy Spirit in Christians (John 14:17; Romans 8:9, 11; 1 Corinthians 3:16; 6:19)” (G1722).
Jesus’ explanation of how spiritual unity works included the example of a vine and branches. Jesus said, “Abide in me, and I in you. As the branch cannot bear fruit by itself, unless it abides in the vine, neither can you, unless you abide in me. I am the vine; you are the branches. Whoever abides in me and I in him, he it is that bears much fruit, for apart from me you can do nothing” (John 15:4-5). The phrase “bears much fruit” refers to the visible expression of power working inwardly and invisibly (G2590) that causes believers to act not according to their own wills, “but expressing the mind of God in words provided and ministered by Him” (G5342). Jesus used the term fruit in numerous illustrations of both good and bad types of spiritual activity. In his Sermon on the Mount, Jesus stated, “Beware of false prophets who come to you in sheep’s clothing but inwardly are ravenous wolves. You will recognize them by their fruits. Are grapes gathered from thornbushes, or figs from thistles? So, every healthy tree bears good fruit, but the diseased tree bears bad fruit. A healthy tree cannot bear bad fruit, nor can a diseased tree bear good fruit. Every tree that does not bear good fruit is cut down and thrown into the fire. Thus you will recognize them by their fruits” (Matthew 7:15-20).
The Apostle Paul talked about the fruit of the Spirit in the context of walking and keeping in step with the Spirit and contrasted it with the works of the flesh. Paul stated:
But I say, walk by the Spirit, and you will not gratify the desires of the flesh. For the desires of the flesh are against the Spirit, and the desires of the Spirit are against the flesh, for these are opposed to each other, to keep you from doing the things you want to do. But if you are led by the Spirit, you are not under the law. Now the works of the flesh are evident: sexual immorality, impurity, sensuality, idolatry, sorcery, enmity, strife, jealousy, fits of anger, rivalries, dissensions, divisions, envy, drunkenness, orgies, and things like these. I warn you, as I warned you before, that those who do such things will not inherit the kingdom of God. But the fruit of the Spirit is love, joy, peace, patience, kindness, goodness, faithfulness, gentleness, self-control; against such things there is no law. And those who belong to Christ Jesus have crucified the flesh with its passions and desires. If we live by the Spirit, let us also keep in step with the Spirit. (Galatians 5:16-26)
The Greek word Paul used that is translated keep in step, stoicheo (stoy-khehˊ-o) means “to march, in (military) rank” and is used “in an exhortation to keep step with one another in submission of heart to the Holy Spirit, and therefore of keeping step with Christ, the great means of unity and harmony in the church” (G4748).
Jesus expressed his concern that his apostles would abandon him and become disconnected from each another. After he told them that he was leaving the world and going to his Father, the apostles claimed to be solid in their faith, but Jesus warned them, “Behold, the hour is coming, indeed it has come, when you will be scattered, each to his own home, and will leave me alone. Yet I am not alone, for the Father is with me. I have said these things to you that in me you may have peace. In the world you will have tribulation. But take heart; I have overcome the world” (John 16:32-33). The Greek word that is translated tribulation, thlipsis (thlipˊ-sis) means “pressure…anything which burdens the spirit” (G2347). Jesus indicated that the pressure of their circumstances would cause the apostles to be scattered, to leave him alone (John 16:32). Therefore, Jesus prayed that God would keep them and that they would be one, even as Jesus and his Father are one (John 17:11).
Jesus’ high priestly prayer began with an acknowledgement that it was time for him to complete his mission. Jesus prayed, “Father, the hour has come; glorify your Son that the Son may glorify you, since you have given him authority over all flesh, to give eternal life to all whom you have given him. And this is eternal life, that they know you the only true God, and Jesus Christ whom you have sent” (John 17:1-3). Knowing God is an essential part of being united with Him. Jesus equated knowing God with eternal life. The Greek word that is translated know, ginosko (ghin-oce’-ko) in a beginning sense means to come to know, to gain or receive a knowledge of someone. In a completed sense, ginosko means to know and approve or love, to care for someone (G1097). The reason why Jesus equated eternal life with knowing God may have been because God is the source of eternal life and therefore having a connection with him is critical for life to be perpetuated. In the Greek language, life eternal “is equivalent to entrance into the kingdom of God” (G166).
In his prayer to his Father, Jesus openly declared:
I am praying for them. I am not praying for the world but for those whom you have given me, for they are yours. All mine are yours, and yours are mine, and I am glorified in them. And I am no longer in the world, but they are in the world, and I am coming to you Holy Father, keep them in your name, which you have given me that they may be one, even as we are one. (John 17:9-11)
Jesus’ request that his Father keep the disciples had to do with him keeping an eye on them. Because he was leaving the world and would no longer be physically present with them, Jesus wanted his disciples to be protected from the negative influence that the world had on their relationship with him and the evil forces that would try to distance them from each other. Jesus asked that “they may be one, even as we are one” (John 17:11). The one that Jesus was speaking of was an emphatic one, meaning “one and the same” (G1520). The Apostle Paul talked about the oneness of believers in Christ in the context of being a body with many members. Paul said:
I appeal to you therefore, brothers, by the mercies of God, to present your bodies as a living sacrifice, holy and acceptable to God, which is your spiritual worship. Do not be conformed to this world, but be transformed by the renewal of your mind, that by testing you may discern what is the will of God, what is good and acceptable and perfect. For by the grace given to me I say to everyone among you not to think of himself more highly than he ought to think, but to think with sober judgment, each according to the measure of faith that God has assigned. For as in one body we have many members, and the members do not all have the same function, so we, though many, are one body in Christ, and individually members one of another. (Romans 12:1-5)
The Greek word that Paul used that is translated body in Romans 12:4-5 is soma (so’-mah) which refers to the body “as a sound whole” as well as “an organized whole made up of parts and members” (G4983). Paul indicated that each member had a function or “practice” (G4234) in the sense of something that is performed “repeatedly or habitually” (G4238). Paul said, “So we, though many, are one body in Christ, and individually members one of another” (Romans 12:5). The idea that Paul was trying to convey was that believers should not think of themselves as being independent of each other, but as a single entity that is dependent upon each and every part that functions within it.
Jesus’ request that his followers would be one (John 17:11) was not about them being brought together, but the need for God to keep them from breaking apart. The same problem existed when the children of Israel took possession of the Promised Land. The Israelites inherited the land by lot according to their clans (Numbers 33:54) and were expected to occupy the same land continuously throughout their generations. Special provisions were made for the Levites who were not given any land of their own to possess (Numbers 35:2-3) and for men that didn’t have any sons to pass their inheritance to (Numbers 36:2), but ultimately, the families had to stay intact in order for them to remain in the place that they had been assigned to live. Numbers 36:6-9 states:
This is what the Lord commands concerning the daughters of Zelophehad: ‘Let them marry whom they think best, only they shall marry within the clan of the tribe of their father. The inheritance of the people of Israel shall not be transferred from one tribe to another, for every one of the people of Israel shall hold on to the inheritance of the tribe of his fathers. And every daughter who possesses an inheritance in any tribe of the people of Israel shall be wife to one of the clan of the tribe of her father, so that every one of the people of Israel may possess the inheritance of his fathers. So no inheritance shall be transferred from one tribe to another, for each of the tribes of the people of Israel shall hold on to its own inheritance.’” (Numbers 36:6-9)
The Israelites’ inheritance locked them into a particular geographic location within the nation’s boundaries. As long as the family members followed the rules of marriage and didn’t transfer possession of their land to an outsider, the Israelite community remained intact, but over the years, ownership changed (1 Kings 21:3-16) and possession of the land was eventually lost all together (2 Kings 25:1-12). When the exiles returned to the land after being held captive in Babylon for 70 years, only a remnant of the tribes of Israel came back and they occupied a very small portion of the land that was originally given to the Israelites (Ezra 2, Nehemiah 3).
Jesus told his Father that he had kept all of them that had been given to him while he was in the world and said, “I have guarded them, and not one of them has been lost except the son of destruction, the Scripture might be fulfilled” (John 17:12). Jesus’ reference to none of his disciples being lost except the son of destruction was related to his message about the vine and branches. Jesus said, “If anyone does not abide in me he is thrown away like a branch and withers; and the branches are gathered, thrown into the fire, and burned” (John 15:6). The critical point that Jesus was focusing his apostles’ attention on was the state of abiding or not abiding in him. Abiding in Christ means that we are remaining in a particular state or condition. The state that believers must maintain is holiness. Jesus talked about this in a conversation with Peter when he was washing his disciples feet. John 13:6-11 states:
He came to Simon Peter, who said to him, “Lord, do you wash my feet?” Jesus answered him, “What I am doing you do not understand now, but afterward you will understand.” Peter said to him, “You shall never wash my feet.” Jesus answered him, “If I do not wash you, you have no share with me.” Simon Peter said to him, “Lord, not my feet only but also my hands and my head!” Jesus said to him, “The one who has bathed does not need to wash, except for his feet, but is completely clean. And you are clean, but not every one of you.” For he knew who was to betray him; that was why he said, “Not all of you are clean.”
“Jesus did not say, ‘you have no share in me’ (en  emoi), which would indicate Peter lacked salvation, but ‘you have no share with me‘ (met’  emou), meaning Peter would have no communion and fellowship with him. Christians need constant cleansing and renewal if they are to remain in fellowship with God” (note on John 13:8). Regeneration has two distinct parts; paliggenesia (pal-ing-ghen-es-eeˊ-ah) “(spiritual) rebirth” and anakainosis (an-ak-ahˊ-ee-no-sis) “renovation.” “Anakainosis (G342) is the result of paliggenesia. The paliggenesia is that free act of God’s mercy and power by which He removes the sinner from the kingdom of darkness and places him in the kingdom of light; it is that act by which God brings him from death to life. In the act itself (rather than the preparations for it), the recipient is passive, just as a child has nothing to do with his own birth. Anakainosis, by contrast, is the gradual conforming of the person to the new spiritual world in which he now lives, the restoration of the divine image. In this process the person is not passive but is a fellow worker with God” (G3824).
Jesus used the Greek word katharos (kath’-ar-os), which is translated clean, to signify that someone has been saved. The Apostle Paul identified the ongoing process that Christian’s go through of being cleansed from their sins as sanctification. The Greek word hagiasmos (hag-ee-as-mos’), which is properly translated as purification “refers not only to the activity of the Holy Spirit in setting man apart unto salvation and transferring him into the ranks of the redeemed, but also to enabling him to be holy even as God is holy (2 Thessalonians 2:13)” (G38). Jesus prayed to his Father, “I do not ask that you take them out of the world, but that you keep them from the evil one. They are not of the world, just as I am not of the world. Sanctify them in the truth; your word is truth. As you sent me into the world, so I have sent them into the world. And for their sake I consecrate myself, that they also may be sanctified in truth” (John 17:15-19). Jesus asked that God would sanctify his followers in the truth. What Jesus meant by truth was the divine truth, “what is true in itself, purity from all error or falsehood…In the New Testament especially, divine truth or the faith and practice of the true religion is called ‘truth’ either as being true in itself and derived from the true God, or as declaring the existence and will of the one true God, in opposition to the worship of false idols” (G225). Thus, when we read and study the Bible, the process of sanctification is taking place.
Jesus extended the scope of his prayer to include all the people that would eventually come to believe in him as a result of his gospel message being spread throughout the world. Jesus prayed:
“I do not ask for these only, but also for those who will believe in me through their word, that they may all be one, just as you, Father, are in me, and I in you, that they also may be in us, so that the world may believe that you have sent me. The glory that you have given me I have given to them, that they may be one even as we are one, I in them and you in me, that they may become perfectly one, so that the world may know that you sent me and loved them even as you loved me. (John 17:20-23)
Jesus asked that “they may all be one, just as you, Father, are in me, and I in you, that they also may be in us” and “that they may become perfectly one, so that the world may know that you sent me and loved them even as you loved me” (John 17:21, 23). Jesus associated becoming perfectly one with being loved by God the Father. The Greek words that are translated become perfectly one have to do with the end result or final outcome of sanctification. What the process of sanctification is actually doing is making all believers into one person, what Paul referred to as the body of Christ (Romans 12:5) of which Jesus is the head (Colossians 1:18).
The King James Version of the Bible translates the phrase become perfectly one as “may be made perfect in one” (John 17:23). The Greek word that is translated made perfect, teleioo (tel-i-o’-o) which means “To complete, make perfect by reaching the intended goal…particularly with the meaning to bring to a full end, completion” was used by Jesus in John 17:4 where he said “I have finished the work” and by Paul in his letter to the Philippians to convey the result of completing his ministry. Paul said, “Not that I have already obtained this or am already perfect, but I press on to make it my own, because Christ Jesus has made me his own. Brothers, I do not consider that I have made it my own. But one thing I do: forgetting what lies behind and straining forward to what lies ahead, I press on toward the goal for the prize of the upward call of God in Christ Jesus” (Philippians 3:12-14). The goal that I believe Paul was referring to in this verse was spiritual unity, the body of Christ becoming perfectly one as a result of everyone being saved and sanctified according to God’s predetermined plan (Ephesians 1:4-5).