For once, I agree with Naomi, that many people believe in the Adam & Eve story. Not just Christians, but Muslims also believe that Adam was the founder of the human race.
As for Jesus Christ, he did exist. He was the Son of God who took on a human form in order to glorify his father. Flavius Josephus who is a famous Jewish historian refers to James, “the brother of Jesus, who was called Christ.”
In fact, a surprising amount of information regarding Jesus can be found in secular history.
As for the point that man was created in God's image, this is where those who say they understand the Bible, fall flat on their faces. Man was created in God's image, but not as you think, looking like him. No way as no one knows how God looks. But to be created in God's image is in that man has God's qualities to a limited degree. Just as God has power, so as man! God has justice, so has man, also love and wisdom. Who of you has never used any of those qualities?
If you say you haven't then I say you're lying!