The first point about this claim of Jesus is that it is far from strange or unique. The founder of every major world religion made similar claims about themself as the ultimate guide to truth. For example, Sri Krishna said, ‘I am the goal of the wise man, and I am the way. ... I am the end of the path, the witness, the Lord, the sustainer. I am the place of abode, the beginning, the friend and the refuge. ... If you set your heart upon me thus, and take me for your ideal above all others, you will come into my Being.’ Similarly, the Buddha said, ‘You are my children, I am your father; through me you have been released from your sufferings. ... My thoughts are always in the truth, for Lo! my self has become the truth.’  If Jesus had not claimed ultimacy for himself, he would not have founded a religion the way I am using the word (recall in the first part of this series, where I defined a religion as one’s commitment to what is ultimate).  

Some people think that Jesus’ claim to ultimacy means that to follow Jesus means to believe all other religions are wrong. But this is a mistake. Jesus is claiming, not that you can find truth nowhere else, but that he is the ultimate authority or paradigm through which we view the world, to help us see what is true and what is false elsewhere.  If Jesus is the truth, this in no way implies that every other religion is all lies or wrong from beginning to end. How could they be, when they agree on so much? It is a strange feature of the modern way of thinking that it loves to posit radical ‘either/or’ alternatives, without seeing the overlap, the layers, the inclusiveness of one thing in another, and the deeper synthesis which reconciles surface-level contradictions. A Christian perspective does not require believing that other religions are lies, but that they only have part of the truth where Jesus has it all. There is all the difference in the world between believing a lie, and believing only part of the truth. Let’s consider some of the other world religions. For a start, to be a Christian automatically implies agreeing with Judaism on a huge amount. Insofar as Judaism denies Jesus as the Messiah, there is a conflict. But this is not a positive belief of Judaism, only an absence where Christianity claims a presence. Similarly, for Christians to consider Islam ‘totally wrong’ is a massive failure of perspective, an inability to notice the enormous overlap Christians have with Muslims, not only on the One Transcendent Creator God, but on all kinds of ethical issues, prayer, worship, fasting and so on. Something similar applies to Hinduism, which is often mistakenly considered polytheistic only because of its reverent denial of the conceivability of Transcendence, from which some Christians would do well to learn. To notice first what we disagree on and let that obscure all the common ground is a failure of charity and graciousness, which makes it a fundamentally unchristian attitude. 

There is all the difference in the world, as well, between calling Jesus the truth and calling Christianity a complete explanation for everything, as if Christians understood Jesus completely and had nothing more to learn. To believe in Jesus is not to understand even Christianity in all its fullness, let alone the ways in which Jesus is manifest dimly through cultures that have never heard of him, or who have heard of him only as a symbol of Western imperialism. St Paul says that for Christians, Christ is ‘before all things, and in him all things hold together’. That means everything has contact with Christ simply by being a thing, by existing. The apostle John writes: ‘All things came into being through him [the Word], and without him not one thing came into being. What has come into being in him was life, and the life was the light of all people’. So if anyone has life, they have their being in Christ, and the light of Christ reveals at least some truth to them. 

For Christians, Christ is the fullness of the truth, and all else is only part of the truth. But Christians still have only part of the truth, because their knowledge of Christ remains incomplete and imperfect. Why could another religion not reveal something of Christ, as long as it didn’t contradict the trusted revelation of Christ in the Bible? How would we know, unless we took the time to listen and learn about other religions, without fear, without defensiveness, without needing to prove things or score points in an argument, also without compromising the ultimate authority of Christ as the supreme judge? Throughout the history of Judeo-Christian religion, the true insights of ‘outsiders’ have been accepted and become part of the faith of ‘insiders’. The Bible’s Book of Proverbs has chapters 22-24  lifted from Egyptian literature. The ideas of circumcision, a sacred temple, and a divinely appointed king all originated from practices in the surrounding nations, adopted and sanctified by Israel. St Paul quotes Greek poets as speaking truth about God. Justin Martyr recognised truths taught by Plato which enlarged the Christian understanding of God and the world. His maxim, “all truth wherever it is found belongs to us as Christians,” summarises the generous attitude Christians ought always to have in their search for wisdom and truth, without ever watering down the fullness of the truth in Christ.