The Imitation of Christ
Book 1, Chapter 24

Learn, then, to suffer little things now that you may not have to suffer greater ones in eternity. Prove here what you can bear hereafter. If you can suffer only a little now, how will you be able to endure eternal torment? If a little suffering makes you impatient now, what will hell fire do? In truth, you cannot have two joys: you cannot taste the pleasures of this world and afterward reign with Christ.

If your life to this moment had been full of honors and pleasures, what good would it do if at this instant you should die? All is vanity, therefore, except to love God and to serve Him alone.

He who loves God with all his heart does not fear death or punishment or judgment or hell, because perfect love assures access to God.

It is no wonder that he who still delights in sin fears death and judgment.

It is good, however, that even if love does not as yet restrain you from evil, at least the fear of hell does. The man who casts aside the fear of God cannot continue long in goodness but will quickly fall into the snares of the devil.