Hi, my promise is in Revelation 3:4-5 which says, “Yet you have a few people in Sardis who have not soiled their clothes. They will walk with me, dressed in white, for they are worthy. He who overcomes will, like them, be Dressed in white. I will never blot out his name from the book of life, acknowledge his name before my father and his angels.”
So the promise is the if we overcome, then we will be like those who where white and are in Heaven walking with Jesus, and not only that, but aslo his (or hers) name won’t be bloted out of the book of life.