From John Owen's The Things of This World:

Whither so fast, my friend? What meaneth this rising so early and going to bed late, eating the bread of carefulness? Why this diligence, why these contrivances, why these savings and hoardings of riches and wealth? To what end is all this care and counsel? "Alas!" saith one, "it is to get that which is enough in and of this world for me and my children, to prefer them, to raise an estate for them, which, if not so great as others, may yet be a competency; to give them some satisfaction in their lives and some reputation in the world." Fair pretenses, neither shall I ever discourage any from the exercise of industry in their lawful callings; but yet I know that with many this is but a pretense and covering for a shameful engagement of their affections unto the world. Wherefore, in all these things, be persuaded sometimes to have an eye to Jesus, the author and finisher of our faith. Behold how he is set before us in the gospel, poor, despised, reproached, persecuted, nailed to the cross, and all by this world. Whatever be your designs and aims, let his cross continually interpose between your affections and this world. If you are believers, your hopes are within a few days to be with him forevermore. Unto him you must give an account of yourselves, and what you have done in this world. ...

Labor continually for the mortification of your affections unto the things of this world. They are, in the state of corrupted nature, set and fixed on them, nor will any reasonings or considerations effectually divert them, or take them off in a due manner, unless they are mortified unto them by the cross of Christ. Whatever change be otherwise wrought in them, it will be of no advantage unto us. It is mortification alone that will take them off from earthly things unto the glory of God. Hence the apostle, having given us that charge, "Set your affection on things above, and not on things on the earth," Col. 3:2, adds this as the only way and means we may do so, "Mortify therefore your members which are upon the earth," verse 5. Let no man think that his affections will fall off from earthly things of their own accord. The keenness and sharpness of them in many things may be abated by the decay of their natural powers in age and the like; they may be mated by frequent disappointments, by sicknesses, pains, and afflictions, as we shall see immediately; they may be willing unto a distribution of earthly enjoyments, to have the reputation of it, wherein they still cleave unto the world, but under another shape and appearance; or they may be startled by convictions, so as to do many things gladly that belong to another frame: but, on one pretense or other, under one appearance or other, they will forever adhere or cleave unto earthly things, unless they are mortified unto them through faith in the blood and cross of Christ, Gal. 6:14. Whatever thoughts you may have of yourselves in this matter, unless you have the experience of a work of mortification on your affections, you can have no refreshing ground of assurance that you are in anything spiritually minded.

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