Thou shalt not take the name of the LORD thy God in {f} vain; for the LORD will not hold him guiltless that taketh his name in vain.

(f) Either by swearing falsely or rashly by his Name, or by condemning it.

Wesley's Notes

20:7 The third commandment is concerning the manner of our worship; Where we have, [1.] A strict prohibition. Thou shalt not take the name of the Lord thy God in vain - Supposing that, having taken Jehovah for their God, they would make mention of his name, this command gives a caution not to mention it in vain, and it is still as needful as ever. We take God's name in vain, First, By hypocrisy, making profession of God's name, but not living up to that profession. Secondly, By covenant breaking. If we make promises to God, and perform not to the Lord our vows, we take his name in vain. Thirdly, By rash swearing, mentioning the name of God, or any of his attributes, in the form of an oath, without any just occasion for it, but to no purpose, or to no good purpose. Fourthly, By false - swearing, which some think is chiefly intended in the letter of the commandment. Fifthly, By using the name of God lightly and carelessly. The profanation of the form of devotion is forbidden, as well as the profanation of the forms of swearing; as also, the profanation of any of those things whereby God makes himself known. For the Lord will not hold him guiltless - Magistrates that punish other offences, may not think themselves concerned to take notice of this; but God, who is jealous for his honour, will not connive at it. The sinner may perhaps hold himself guiltless, and think there is no harm in it; to obviate which suggestion, the threatening is thus expressed, God will not hold him guiltless - But more is implied, that God will himself be the avenger of those that take his name in vain; and they will find it a fearful thing to fall into the hands of the living God.

Matthew Henry's Concise Commentary

20:3-11 The first four of the ten commandments, commonly called the FIRST table, tell our duty to God. It was fit that those should be put first, because man had a Maker to love, before he had a neighbour to love. It cannot be expected that he should be true to his brother, who is false to his God. The first commandment concerns the object of worship, JEHOVAH, and him only. The worship of creatures is here forbidden. Whatever comes short of perfect love, gratitude, reverence, or worship, breaks this commandment. Whatsoever ye do, do all the glory of God. The second commandment refers to the worship we are to render to the Lord our God. It is forbidden to make any image or picture of the Deity, in any form, or for any purpose; or to worship any creature, image, or picture. But the spiritual import of this command extends much further. All kinds of superstition are here forbidden, and the using of mere human inventions in the worship of God. The third commandment concerns the manner of worship, that it be with all possible reverence and seriousness. All false oaths are forbidden. All light appealing to God, all profane cursing, is a horrid breach of this command. It matters not whether the word of God, or sacred things, all such-like things break this commandment, and there is no profit, honour, or pleasure in them. The Lord will not hold him guiltless that taketh his name in vain. The form of the fourth commandment, Remember, shows that it was not now first given, but was known by the people before. One day in seven is to be kept holy. Six days are allotted to worldly business, but not so as to neglect the service of God, and the care of our souls. On those days we must do all our work, and leave none to be done on the sabbath day. Christ allowed works of necessity, charity, and piety; for the sabbath was made for man, and not man for the sabbath, Mr 2:27; but all works of luxury, vanity, or self-indulgence in any form, are forbidden. Trading, paying wages, settling accounts, writing letters of business, worldly studies, trifling visits, journeys, or light conversation, are not keeping this day holy to the Lord. Sloth and indolence may be a carnal, but not a holy rest. The sabbath of the Lord should be a day of rest from worldly labour, and a rest in the service of God. The advantages from the due keeping of this holy day, were it only to the health and happiness of mankind, with the time it affords for taking care of the soul, show the excellency of this commandment. The day is blessed; men are blessed by it, and in it. The blessing and direction to keep holy are not limited to the seventh day, but are spoken of the sabbath day.