_Direct._ X. Make not a law and religion to yourselves by your voluntary vows, which God never made you by his authority; nor bind yourselves for futurity to all that is a duty at present, where it is possible that the change of things may change your duty. God is our King and Governor, and not we ourselves: it is not we, but he, that must give laws to us. We have work enough to do of his appointing; we need not make more to ourselves, as if he had not given us enough. Vows are not to make us new duties or religions, but to further us in the obedience of that which our Lord hath imposed on us. It is a self-condemning sin of foolish will-worshippers, to be busy in laying more burdens on themselves, when they know they cannot do so much as God requireth of them. Yea, some of them murmur at God's laws as too strict, and at the observers of them as too precise, (though they come far short of what is their duty,) and yet will be cutting out more work for themselves. And it is not enough that what you vow be your duty at the present, but you must bind yourselves to it by vows no longer than it shall remain your duty. It may be your duty at the present to live a single life; but if you will vow therefore that you will never marry, you may bind yourselves to that which may prove your sin: you know not what alterations may befall you in your body or estate, that may invite you to it. Are you sure that no change shall make it necessary to you? Or will you presume to bind God himself by your vows, that he shall make no such alteration? Or if you were never so confident of your own unchangeableness, you know not what fond and violent affections another may be possessed with, which may make an alteration in your duty. At the present it may be your duty to live retiredly, and avoid magistracy and public employments: but you may not vow it therefore for continuance; for you know not but God may make such alterations, as may make it so great and plain a duty, as without flat impiety or cruelty, you cannot refuse. Perhaps at the present it may be your duty to give half your yearly revenues to charitable and pious uses: but you must not therefore vow it for continuance (without some special cause to warrant it); for perhaps the next year it may be your duty to give but a fourth or a tenth part, or none at all, according as the providence of God shall dispose of your estate and you. Perhaps God may impose a clear necessity on you, of using your estate some other way.