I was told by a lady, and even found it again on the internet, that once you become saved and become a Christian, if you commit adultery you cannot be forgiven. She said that it is considered blasphemy of God. I am absolutely terrified that this sin has been committed by me and I am a Christian. I was backsliding at the time and didn't really know God, but I do now. She said it was Romans, chapter 2, verses 1 through 25. I looked at it myself but it's a little hard to understand. Please help me. Am I doomed to hell?