In these last verses of the prayer, Jesus expands the circle of those for whom he prays to include believers of the future. Since Jesus did not come to make a limited revelation, but one that was meant to embrace the whole world, it is only appropriate that he pray also for those who will believe because of the disciples’ word and witness. The primary invocation that Jesus makes here is the all be one. It is a petition for unity. The reason for this petition is that Jesus wants all those who will believe in him to share in the same relationship that he shares with his Father. Just as Jesus and the Father are one, so, he prays, that all believers will also share in this mutual indwelling. When this unity is seen by those who do not yet believe, they, too, will be inspired to know and believe that Jesus was indeed sent by God. Unity of the community, which has as its source the unity of the Son and Father, will be the drawing force that will lead others to Jesus. By the unity that is shown in community, those who believe in Jesus will also be able to complete God’s work in the same way in which Jesus did.
In the last three verses of the prayer (17:24-26), there is a greater intensity. Petition changes to want. This is not to be interpreted as selfishness but rather, as audacity or confidence. Jesus is confident that his Father will give him what he wants and also, that this is his Father’s will for him and all believers. What Jesus wants is that God, he, and the believers, share in a mutual indwelling. What he wants is that all be one. This oneness and unity is expressed in the tangible reality of love.
Christianity was never meant to be, and can never be, a private religion. Everything about Christianity is both individual and communitarian. The seven Sacraments are beautiful examples of the communal dimension of Christianity. This is because Jesus did not come to make a private or esoteric revelation to only a small group of individuals but to make a revelation to the whole world. Thus, the community of believers today is faced with this challenge of showing the communal dimension or unity of the community and so, drawing others to believe. It is a tremendous privilege and responsibility. It is a privilege because we are called to continue the work of Jesus himself and so share in the mission entrusted to him by his Father. It is a responsibility because, as believers, we cannot be complacent and content with our private devotions or individual faith. We must manifest it to everyone we meet. It is a faith that is to be shown in action, a faith that is to be shown in tangible love.