Jeremias 2:19

7. On this account, too, did the Lord assert that the kingdom of heaven was the portion of “the violent;” and He says, “The violent take it by force;” that is, those who by strength and earnest striving are on the watch to snatch it away on the moment. On this account also Paul the Apostle says to the Corinthians, “Know ye not, that they who run in a racecourse, do all indeed run, but one receiveth the prize? So run, that ye may obtain. Every one also who engages in the contest is temperate in all things: now these men [do it] that they may obtain a corruptible crown, but we an incorruptible. …

In the Wisdom of Solomon: “All the idols of the nations they counted gods, which neither have the use of their eyes for seeing, nor their nostrils to receive breath, nor their ears for hearing, nor the fingers on their hands for handling; but their feet also are slow to walk. For man made them; and he who has borrowed his breath, he fashioned them. But no man will be able to fashion a god like to himself. For since he is mortal, he fashioneth a dead thing with wicked hands. …

I should say then that the saints who keep a firm hold of the recollection of God and are borne along, as it were, with their steps suspended on a line stretched out on high, may be rightly compared to rope dancers, commonly called funambuli, who risk all their safety and life on the path of that very narrow rope, with no doubt that they will immediately meet with a most dreadful death if their foot swerves or trips in the very slightest degree, or goes over the line of the course in which alone is safety. …

This then is that body of death from which we cannot escape, pent in which those who are perfect, who have tasted “how gracious the Lord is,” daily feel with the prophet “how bad for himself and bitter it is for a man to depart from the Lord his God.” This is the body of death which restrains us from the heavenly vision and drags us back to earthly things, which causes men while singing Psalms and kneeling in prayer to have their thoughts filled with human figures, or conversations, or business, or unnecessary actions. …

But the fact that to us on the contrary the yoke of Christ seems neither light nor easy, must be rightly ascribed to our perverseness, as we are cast down by unbelief and want of faith, and fight with foolish obstinacy against His command, or rather advice, who says: “If thou wilt be perfect, go sell (or get rid of) all that thou hast, and come follow Me,” for we keep the substance of our worldly goods. And as the devil holds our soul fast in the toils of these, what remains but that, when he wants to sever us from spiritual delights, he should vex us by diminishing these and depriving us of them, contriving by his crafty wiles that when the sweetness of His yoke and lightness of His burden have become grievous to us through the evil of a corrupt desire, and when we are caught in the chains of that very property and substance, which we kept for our comfort and solace, he may always torme …