A man who has learned the art of contentment is the most contented with any low condition that he has in the world, and yet he cannot be satisfied with the enjoyment of all the world. He is contented if he has but a crust, but bread and water, that is, if God disposes of him for the things of the world, to have but bread and water for his present condition, he can be satisfied with God's disposal in that; yet if God should give unto him Kingdoms and Empires, all the world to rule, if he should give it ot him for his portion, he would not be satisfied with that. Here is the mystery of it: though his heart is so enlarged that the enjoyment of all the world and ten thousand worlds cannot satisfy him for his portion; yet he has a heart quieted under God's disposal, if he gives him but bread and water. To join these two together must needs be a great art and mystery. Though he is contented with God in a little, yet those things that would content other men will not content him. The men of the world seek after wealth, and think if they had thus much, and thus much, they would be content. They do not aim at great things; but if I had, perhaps some man thinks, only two or three hundred a year, then I should be well enough; if I had but a hundred a year, or a thousand a year, says another, then I should be satisfied. But a gracious heart says that if he head ten hundred thousand times so much a year, it would not satisfy him; if he had the quintessence of all the excellences of all the creatures in the world, it could not satisfy him; and yet this man can sing, and be merry and joyful when he has only a crust of bread and a little water in the world. Surely religion is a great mystery! Great is the mystery of godliness, not only in the doctrinal part of it, but in the practical part of it also.
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Though a gracious heart knows that it is capable of God, and was made for God, carnal hearts think without reference to God. But a gracious heart, being enlarged to be capable of God, and enjoying somewhat of him, can be filled by nothing in the world; it must only be God himself. Therefore you will observe, that whatever God may give to a gracious heart, a heart that is godly, unless he gives himself it will not do. A godly heart will not only have the mercy, but the God of that mercy as well; and then a little matter is enough in the world, so be it he has the God of the mercy which he enjoys.
From The Rare Jewel of Christian Contentment by Jeremiah Burroughs