As a little girl I remember thinking, "I don't know if I have felt the Holy Ghost." and then panicking that I had just "denied the Holy Ghost." Years later I was relieved to learn that the "unpardonable sin" was more than I would ever be able to do in this life. The amount of light and knowledge you need to have before you deny it was not something I am even capable of. Now the beauty and the mercy in these verses is that with the exception of a handful of people, salvation is a gift to EVERYONE of God's children. His love for us is so encompassing that no matter who we are or where we have been He has prepared a place of glory for us!