"Without holiness on earth — we will never be prepared to enjoy Heaven. ...I do not know what others may think — but to me it does seem clear that Heaven would be a miserable place to an unholy man. It cannot be otherwise. People may say in a vague way, that they "hope to go to Heaven," but they do not consider what they say. There must be a certain "fitness for the inheritance of the saints in light." Our hearts must be somewhat in tune. To reach the holiday of glory — we must pass through the training school of grace. We must be heavenly-minded and have heavenly tastes in the present life — or else we will never find ourselves in Heaven in the life to come! "Without holiness, no one shall see the Lord!"
-- J.C. Ryle, Holiness