It indeed could be for sins committed in which we don't realize we are doing wrong. After all, Jesus said, ...for they know not what they do.If we KNOW it is sin, well, I don't know just how that works. I wonder if the woman at the well was aware that, surely, she was in sin at some point? If so, Jesus didn't say repent. Instead, she brought forth works meet for repentance, I think.As for not forgiving...Jesus said that if we don't forgive, we cannot be forgiven. So I'm thinking that you would NOT be forgiven on that one--especially KNOWING that the Holy Spirit has told you to do so.