Psalms 37:4

When we look abroad we see the world full of evil-doers, that flourish and live in ease. So it was seen of old, therefore let us not marvel at the matter. We are tempted to fret at this, to think them the only happy people, and so we are prone to do like them: but this we are warned against. Outward prosperity is fading. When we look forward, with an eye of faith, we shall see no reason to envy the wicked. Their weeping and wailing will be everlasting. The life of religion is a believing trust in the Lord, and diligent care to serve him according to his will. It is not trusting God, but tempting him, if we do not make conscience of our duty to him. A man's life consists not in abundance, but, Thou shalt have food convenient for thee. This is more than we deserve, and it is enough for one that is going to heaven. To delight in God is as much a privilege as a duty. He has not promised to gratify the appetites of the body, and the humours of the fancy, but the desires of the renewed, sanctified soul. What is the desire of the heart of a good man? It is this, to know, and love, and serve God. Commit thy way unto the Lord; roll thy way upon the Lord, so the margin reads it. Cast thy burden upon the Lord, the burden of thy care. We must roll it off ourselves, not afflict and perplex ourselves with thoughts about future events, but refer them to God. By prayer spread thy case and all thy cares before the Lord, and trust in him. We must do our duty, and then leave the event with God. The promise is very sweet: He shall bring that to pass, whatever it is, which thou has committed to him.

There is an ascent in this third precept. He who was first bidden not to fret, was then commanded actively to trust, and now is told with holy desire to delight in God. Delight thyself also in the Lord. Make Jehovah the joy and rejoicing of thy spirit. Bad men delight in carnal objects; do not envy them if they are allowed to take their fill in such vain idols; look thou to thy better delight, and fill thyself to the full with thy more sublime portion. In a certain sense imitate the wicked; they delight in their portion —take care to delight in yours, and so far from envying you will pity them. There is no room for fretting if we remember that God is ours, but there is every incentive to sacred enjoyment of the most elevated and ecstatic kind. Every name, attribute, word, or deed of Jehovah, should be delightful to us, and in meditating thereon our soul should be as glad as is the epicure who feeds delicately with a profound relish for his dainties. And he shall give thee the desires of thine heart. A pleasant duty is here rewarded with another pleasure. Men who delight in God desire or ask for nothing but what will please God; hence it is safe to give them carte blanche. Their will is subdued to God's will, and now they may have what they will. Our innermost desires are here meant, not our casual wishes; there are many things which nature might desire which grace would never permit us to ask for; these deep, prayerful, asking desires are those to which the promise is made.