The high praise of God shall be in their mouth: and two-edged swords in their hands:

“But the saints who "exult in glory," no need is there for us to say how they exult: just hear the verse of the Psalm which follows: "The saints shall exult in glory, they shall rejoice in their beds:" not in theatres, or amphitheatres, or circuses, or follies, or market places, but "in their chambers." What is, "in their chambers"? In their hearts. Hear the Apostle Paul exulting in his closet: "For this is our glory, the testimony of our conscience." [2 Corinthians 1:12] On the other hand, there is reason to fear lest any be pleasing to himself, and so seem to be proud, and boast of his conscience. For every one ought to exult with fear, for that wherein he exults is God's gift, not his own desert. For there be many that please themselves, and think themselves righteous; and there is another passage which goes against them, which says, "Who shall boast that he has a clean heart, and that he is pure from sin?" [Proverbs 20:9] There is then, so to speak, a limit to glorying in our conscience, namely, to know that your faith is sincere, your hope sure, your love without dissimulation. "The exultations of God are in their mouths" [Psalm 149:6]. In such wise shall they "rejoice in their closets," as not to attribute to themselves that they are good, but praise Him from whom they have what they are, by whom they are called to attain to what they are not, and from whom they hope for perfection, to whom they give thanks, because He has begun.”

“Let the high praises of God be in their mouth,.... Or "throats" (m); loudly declared by them. The word "praises" is not in the text, and so may be read, "the high things of God" (n); or, "the heights of God", as the Septuagint: and these are the perfections of God; as his omniscience, which is knowledge too high for a creature to attain unto, and even to conceive of; his omnipotence, for high is his right hand; his omnipresence, this is higher than heaven, deeper than hell, its measure is longer than the earth, and broader than the sea; his love, grace, and mercy, which are in the heavens; and his truth and faithfulness, which reach to the clouds; his eternity, immutability, and other attributes; all which should be often talked of and celebrated: also the high acts and works of God, those more inward and secret; as the thoughts of his heart, which are higher than ours, as the heavens than the earth; the everlasting love of God, which has an height not to be reached; the eternal choice of persons to grace and glory, before all time; the covenant of grace, which exceeds the mountains for height, as well as duration; and the glorious scheme of our peace, reconciliation, and redemption, contrived in the divine mind, and formed in Christ from everlasting: and others more outward, open, and manifest; as the works of creation and providence; of redemption by Christ; the operations of the Spirit, and the powerful success of the Gospel among Jews and Gentiles. The Vulgate Latin version and others render it, "the exaltations of God" (o); Father, Son, and Spirit: Jehovah the Father should be exalted in the mouths of his saints, for his love to them, choice of them, covenant with them, the mission of his Son on their account, and the regeneration of them according to his abundant mercy; and Jehovah the Son should be exalted by them with their mouths and lips, as well as in their hearts, in his person, by honouring him as they do the Father, in his offices, kingly, priestly, and prophetic; and the Holy Spirit should be exalted, by ascribing the work of grace to him, the beginning, carrying on, and finishing of it; and a twoedged sword in their hand; which is no other than the word of God, Eph 6:17; one of its edges is the law, which sharply reproves and menaces for sin, threatening with curses, condemnation, and death; and which, in the Spirit's hand, cuts deep into the hearts of men, lays open the corruption of their nature, and the swarms of sin which are in them; it causes pain and grief, working wrath in the conscience; it wounds and kills, and is therefore called the letter that kills, Co2 3:6. The other edge is the Gospel, which cuts in pieces the best of men; all their works of righteousness, which it removes from their justification and salvation; and all their wisdom, holiness, freewill power, and creature abilities; and it cuts down the worst in man, his sinful as well as his righteous self; it teaches him to deny ungodliness and worldly lusts; it is useful to refute errors, and defend truth: and it is an instrument, and only a passive instrument, used by the Lord, as his power unto salvation; it is a sword, but only effectual as it is the sword of the Spirit; it is a part of the weapons of our warfare, and it is mighty, but only through God; it can do nothing of itself, but as it is in the hand of another; and it should be in the hands of all the saints in common, as well as in the hands of Gospel ministers, to withstand error, maintain truth, and repel the temptations of Satan. The Targum is, "the praises of God in their throats, and as twoedged swords in their hands;'' making the praises of God and the twoedged swords to be the same: and so Jarchi and R. Jeshuah in Aben Ezra interpret them. (m) "in gutture eorum", V. L. Pagninus, Montanus, Piscator, &c. (n) , Sept. "celsitudines", Schmidt. (o) "Exaltationes Dei", V. L. Pagninus, Montanus, Musculus, Gejerus, Michaelis; so Ainsworth.”

“Hands. He seems to allude to the regulation of Nehemias, (2 Esdras iv. 17.; Haydock) or to the Machabees, who were priests and soldiers. They shall proclaim God’s praises, and defend the nation. In the spiritual sense, Catholics employ the two-edged sword of the Old and New Testament against heretics, and exercise the power of Christ in excommunicating the wicked. (St. Jerome) — Our Saviour enables the saints to judge at the last day, Matthew xix. 28. (Calmet) — This chiefly regards such as have left all things, like the apostles, and those who embrace a monastic life, Matthew iv. 20., and xix. 27., Acts iv. 34., and 1 Corinthians vi. 3. — They shall judge whether people have made good or bad use of their possessions. (St. Augustine) (Ven. Bede) — All the blessed will approve of God’s sentence; and their example in overcoming difficulties, will evince the baseness of the wicked, who have yielded to less temptations. (Worthington)”