Better is it that thou shouldest not vow, etc. - We are under constant obligations to live to God; no vow can make it more so. Yet, there may be cases in which we should bind ourselves to take up some particular cross, to perform some particular duty, to forego some particular attachment that does not tend to bring our souls nearer to God. Then, if fully determined, and strong in faith relative to the point, bind and hold fast; but if not fully, rationally, and conscientiously determined, "do not suffer thy mouth to cause thy soul to sin."

Better is it that thou shouldest not vow,.... For a vow is an arbitrary thing; a man is not bound to make it, and while he vows not, it is in his own power, and at his option, whether he will do this or that, or not; but when he has once vowed, he is then brought under an obligation, and must perform; see Acts 5:4; and therefore it is better not to vow; it is more acceptable to God, and, it is better for a man;

than that thou shouldest vow and not pay; for this shows great weakness and folly, levity and inconstancy, and is resented by the Lord.

Better is it that thou shouldest not vow, than that thou shouldest vow and not pay.

5. (De 23:21, 23).

5:4-8 When a person made engagements rashly, he suffered his mouth to cause his flesh to sin. The case supposes a man coming to the priest, and pretending that his vow was made rashly, and that it would be wrong to fulfil it. Such mockery of God would bring the Divine displeasure, which might blast what was thus unduly kept. We are to keep down the fear of man. Set God before thee; then, if thou seest the oppression of the poor, thou wilt not find fault with Divine Providence; nor think the worse of the institution of magistracy, when thou seest the ends of it thus perverted; nor of religion, when thou seest it will not secure men from suffering wrong. But though oppressors may be secure, God will reckon for all.