The Enchiridion

All the commandments of God, then, are embraced in love, of which the apostle says: “Now the end of the commandment is charity, out of a pure heart, and of a good conscience, and of faith unfeigned.” Thus the end of every commandment is charity, that is, every commandment has love for its aim. But whatever is done either through fear of punishment or from some other carnal motive, and has not for its principle that love which the Spirit of God sheds abroad in the heart, is not done as it ought to be done, however it may appear to men.

For this love embraces both the love of God and the love of our neighbor, and “on these two commandments hang all the law and the prophets,” we may add the Gospel and the apostles. For it is from these that we hear this voice: The end of the commandment is charity, and God is love. Wherefore, all God's commandments, one of which is, “You shall not commit adultery,” and all those precepts which are not commandments but special counsels, one of which is, “It is good for a man not to touch a woman,” are rightly carried out only when the motive principle of action is the love of God, and the love of our neighbor in God.

And this applies both to the present and the future life. We love God now by faith, then we shall love Him through sight. Now we love even our neighbor by faith; for we who are ourselves mortal know not the hearts of mortal men. But in the future life, the Lord “both will bring to light the hidden things of darkness, and will make manifest the counsels of the hearts, and then shall every man have praise of God;” for every man shall love and praise in his neighbor the virtue which, that it may not be hid, the Lord Himself shall bring to light.

Moreover, lust diminishes as love grows, till the latter grows to such a height that it can grow no higher here. For “greater love has no man than this, that a man lay down his life for his friends.” Who then can tell how great love shall be in the future world, when there shall be no lust for it to restrain and conquer? For that will be the perfection of health when there shall be no struggle with death.