Why do Christians keep claiming that they alone have the truth about God? What is true for you isn't necessarily true for someone else. It just depends on the way we each look at things. The whole idea of "truth" is out of date, in my view. — W.S.
Do you really believe there is no such thing as truth? To be honest, I doubt it. We all believe some things are truth and some things are false. Our experience proves it, and our lives depend on it.
For example, have you ever realized how many times you act in a certain way because you believe something is true? You'd never drink from a bottle that was marked "poison"; you know it might kill you. Poison is always dangerous, and you avoid it because you know this is true. In other words, you act in a certain way because you believe in truth—the truth that poison kills.
What does this have to do with God? Simply this: God is the source of all truth—and He has revealed the truth about Himself to us. Christians believe God did this in a way that staggers our imagination: He became a human being. Do you want to know what God is like? Look at Jesus Christ, for He was God in human flesh! As the Bible says, "The Word became flesh and made his dwelling among us. We have seen his glory" (John 1:14).
This is why I invite you to look at Jesus Christ as He is revealed in the pages of the Gospels. When you do, you will realize how much God loves you and why Jesus alone could say, "I am the way and the truth and the life. No one comes to the Father except through me" (John 14:6).