At its heart, the Christian faith is a message about Jesus Christ, a message that's really good news for all people.
Jesus was a real historical person, who lived 2,000 years ago. We can know about him through detailed eyewitness accounts of his life. He claimed to show us that God exists, and who God really is. He also claimed to be the solution to everything that is wrong with the world. If his claims are true, he has ultimate relevance for us today.