The command "to swear by His Name" is not inconsistent with the Lord's injunction Matthew 5:34, "Swear not at all." Moses refers to legal swearing, our Lord to swearing in common conversation. It is not the purpose of Moses to encourage the practice of taking oaths, but to forbid that, when taken, they should be taken in any other name than that of Israel's God. The oath involves an invocation of Deity, and so a solemn recognition of Him whose Name is made use of in it. Hence, it comes especially within the scope of the commandment Moses is enforcing.

Thou shalt fear the Lord thy God - Thou shalt respect and reverence him as thy Lawgiver and Judge; as thy Creator, Preserver, and the sole object of thy religious adoration.

And serve him - Our blessed Lord, in Matthew 4:10; Luke 4:8, quotes these words thus: And him Only (αυτῳ μονῳ) shalt thou serve. It appears, therefore, that לבדו lebaddo was anciently in the Hebrew text, as it was and is in the Septuagint, (αυτῳ μονῳ), from which our Lord quoted it. The Coptic preserves the same reading; so do also the Vulgate, (illi soli), and the Anglo-Saxon. Dr. Kennicott argues, that without the word only the text would not have been conclusive for the purpose for which our Lord advanced it; for as we learn from Scripture that some men worshipped false gods in conjunction with the true, the quotation here would not have been full to the point without this exclusive word. It may be proper to observe that the omitted word לבדו lebaddo, retained in the above versions, does not exist in the Hebrew printed text, nor in any MS. hitherto discovered.

Shalt swear by his name - תשבע tishshabea, from שבע shaba, he was full, satisfied, or gave that which was full or satisfactory. Hence an oath and swearing, because appealing to God, and taking him for witness in any case of promise, etc., gave full and sufficient security for the performance; and if done in evidence, or to the truth of any particular fact, it gave full security for the truth of that evidence. An oath, therefore, is an appeal to God, who knows all things, of the truth of the matter in question: and when a religious man takes such an oath, he gives full and reasonable satisfaction that the thing is so, as stated; for it is ever to be presumed that no man, unless in a state of the deepest degradation, would make such an appeal falsely, for this would imply an attempt to make God a party in the deception.

Thou shalt fear the Lord thy God, and serve him,.... Serve him through fear; not through slavish fear, a fear of hell and damnation; but through filial fear, a reverential affection for that God that had brought them out of a state of bondage into great and glorious liberty, out of Egypt into Canaan's land, out of a place of misery into a land of plenty; and therefore should fear the Lord and his goodness, and from such a fear of him serve him, in every part of worship, public and private, enjoined; this passage Christ refers to Matthew 4:10.

and shalt swear by his name; when they made a covenant with any, or were called to bear a testimony for the decision of any controversy which could not be otherwise finished; or whenever they took an oath on any account, which should never be taken rashly or on any trivial account, and much less falsely; it should be taken not in the name of any idol, or of any other but the true and living God; the Targum of Jonathan is,"in the name of the Word of the Lord, in truth ye shall swear.''

Thou shalt fear the LORD thy God, and serve him, and shalt {f} swear by his name.

(f) We must fear God, serve him only and confess his Name, which is done by swearing lawfully.

6:13 Shalt swear by his name - When thou hast a call and just cause to swear, not by idols, or any creatures.

Margin fear

See Scofield Note: "Ps 19:9".

6:6-16 Here are means for maintaining and keeping up religion in our hearts and houses. 1. Meditation. God's words must be laid up in our hearts, that our thoughts may be daily employed about them. 2. The religious education of children. Often repeat these things to them. Be careful and exact in teaching thy children. Teach these truths to all who are any way under thy care. 3. Pious discourse. Thou shalt talk of these things with due reverence and seriousness, for the benefit not only of thy children, but of thy servants, thy friends and companions. Take all occasions to discourse with those about thee, not of matters of doubtful disputation, but of the plain truths and laws of God, and the things that belong to our peace. 4. Frequent reading of the word. God appointed them to write sentences of the law upon their walls, and in scrolls of parchment to be worn about their wrists. This seems to have been binding in the letter of it to the Jews, as it is to us in the intent of it; which is, that we should by all means make the word of God familiar to us; that we may have it ready to use upon all occasions, to restrain us from sin, and direct us in duty. We must never be ashamed to own our religion, nor to own ourselves under its check and government. Here is a caution not to forget God in a day of prosperity and plenty. When they came easily by the gift, they would be apt to grow secure, and unmindful of the Giver. Therefore be careful, when thou liest safe and soft, lest thou forget the Lord. When the world smiles, we are apt to make court to it, and expect our happiness in it, and so we forget Him who is our only portion and rest. There is need of great care and caution at such a time. Then beware; being warned of your danger, stand upon your guard. Thou shalt not tempt the Lord thy God; neither by despairing of his power and goodness, while we keep in the way of our duty; nor by presuming upon it, when we turn aside out of that way.