My enemies have reviled me daily The faithful, to excite the compassion of God towards them, tell him that they are not only objects of mockery to their enemies, but also that they swore by them. The indignity complained of is, that the ungodly so shamefully triumphed over God's chosen people, as even to borrow from their calamities a form of swearing and imprecation. This was to regard the fate of the Jews as a signal pattern in uttering the language of imprecation. When, therefore, at the present day the ungodly, in like manner, give themselves loose reins in pouring forth against us contumelious language, let us learn to fortify ourselves with this armor, by which such kind of temptation, however sharp, may be overcome. The Holy Spirit, in dictating to the faithful this form of prayer, meant to testify that God is moved by such revilings to succor his people; even as we find it stated in Isaiah 37:23, "Whom hast thou reproached and blasphemed, and against whom hast thou exalted thy voice? even against the Holy One of Israel;" and in the verse immediately preceding the prophet had said, "He hath despised thee, O daughter of Zion! against thee hath he shaken the head, O daughter of Jerusalem!" It is surely an inestimable comfort that the more insolent our enemies are against us, the more is God incited to gird himself to aid us. In the second clause the inspired writer expresses more strongly the cruelty of his enemies, when he speaks of their being mad against him As the verb hll, halal, which we have rendered mad, generally signifies to praise, it might here be understood as having, by the figure antiphrasis, a sense the very opposite -- those who dispraised or reproached me. But it is better to follow the commonly received interpretation. Some maintain that they are called mad, because they manifested their own folly, making it evident from the manner in which they acted, that they were worthless persons; but this opinion does too much violence to the text. The more satisfactory sense is, that the people of God charge revilers with cruelty or furious hatred.

Mine enemies reproach me all the day - Continually. They reproach me as one of thy people; or, I bear reproaches in common with others, and it becomes to me a personal matter, so entirely are my feelings and interests identified with those of thy people. Perhaps there were also, mingled with this, personal reproaches and calumnies.
And they that are mad against me - Angry; excited even to madness.
Are sworn against me - literally, "swear by me," or against me. The meaning is, that they have conspired together under the solemnity of an oath to do me harm. It is not the wrath of an individual that I am to meet, but the combined wrath of those who act under the solemnities of an oath. Compare Acts 23:12.

They that are mad against me are sworn against me - The Chaldeans are determined to destroy us; and they have bound themselves by oath to do it. See a similar case related Acts 23:12-14, where a number of Jews had bound themselves by an oath neither to eat nor drink till they had slain Paul.

Mine enemies reproach me all the day; [and] they that are mad against me are (f) sworn against me.
(f) Have conspired my death.

Mine enemies reproach me all the day,.... For his principles and practices, being different from theirs; for his religion, and preciseness in it; for his faith and profession of it, and for his holy walk and conversation. Good men have their enemies, and always had; but then they are such who are also enemies to God and Christ, and true religion; and these, not content to reproach now and then, continually throw out their scoffs and jeers; which is not grateful, and is here mentioned as an article of complaint; though the saints should reckon reproach for the sake of Christ and religion greater riches than all the treasures in Egypt:
and they that are mad against me; as the Jews were against Christ, because of his miracles, doctrine, and success, and therefore sought to take away his life; and as the Apostle Paul before conversion was, even exceeding mad against the saints, and persecuted them to strange cities, Luke 6:11, so were the psalmist's enemies quite outrageous and implacable, being his sworn enemies, as follows:
are sworn against me: laid themselves under a curse, to do him all the mischief they could, and it may be to take away his life; as those who sware they would neither eat nor drink till they had killed Paul, Acts 23:12 or they sware to lies, false charges and accusations brought against him, like those that Jezebel suborned against Naboth: or "they sware by me" (r); as the words may be rendered; they sware by his calamities and distresses, and wished they might be as he was, if they did not do so and so; and took his name for a curse.
(r) "per me jurant", Tigurine version, Musculus, Junius & Tremellius, Piscator, Cocceius, Gejerus, Michaelis.

sworn against me--or literally, "by me," wishing others as miserable as I am (Numbers 5:21).