Psalms 37:3-4

Psalms 37:3-4. Trust in the LORD, and do good; so shalt thou dwell in the land, and verily thou shalt be fed. Delight thyself also in the LORD; and he shall give thee like desires of thine heart.

Here is a duty which is as much a pleasure as it is a duty, nay, it is even more a pleasure than a duty: "Delight thyself also in the Lord." Here is a commandment to be happy in the safest conceivable way. Of all delights, the most delicious is delight in God, and to this we are commended. But what a privilege is that which is annexed to it: "He shall give thee the desires of thine heart." Why is this? Because, when you delight in God, your desires will be such as he can safely grant. Delighting in him, you will only desire that which is for this glory; and then, without any restrictions he may promise to you, and give to you the desires of your heart.