There are countless philosophical proofs for the existence of God, and we can know He exists by means of our human reason alone. The entire universe, a universe that is knowable and ordered and that cannot create itself, stands as proof of God’s existence. But how do we get from the the existence of God to the truth of Christianity?
If God exists, then we can also say that of all the different world religions that claim to know the truth of God, only one can have the fullness of truth. As C.S. Lewis, one of the most influential promotors of the Christian faith in the modern age, put it: “If you are a Christian you do not have to believe that all the other religions are simply wrong all through. If you are an atheist you do have to believe that the main point in all the religions of the whole world is simply one huge mistake. If you are a Christian, you are free to think that all these religions, even the queerest ones, contain at least some hint of the truth. When I was an atheist I had to try to persuade myself that most of the human race have always been wrong about the question that mattered to them most; when I became a Christian I was able to take a more liberal view. But, of course, being a Christian does mean thinking that where Christianity differs from other religions, Christianity is right and they are wrong. As in arithmetic—there is only one right answer to a sum, and all other answers are wrong: but some of the wrong answers are much nearer being right than others.”
For Christians, it all comes down to the person of Jesus Christ, who said “I am the way, the truth, and the life. No one comes to the Father but by me” (Jn 14:6). It is the person of Jesus that we must look at and evaluate. If Jesus’ claims are true, then he is the Son of God as he claimed to be, and we must follow him.
How do we evaluate Jesus’ claims? The books that have been written to present the case for the truth of Christianity, from St. Augustine’s Confessions to C.S. Lewis’ Mere Christianity, number in the thousands. We think that for the modern seeker of truth, one of the best ways to explore the claims of Christianity is via a ten-week course called Alpha. Click the link below to find out more.