Praise ye the Lord,.... Or, "hallelujah". This is the title of the psalm, as in the two preceding, and directs to the principal matter of it. Praise, O ye servants of the Lord; meaning not the angels, nor all men, nor the priests and Levites only; but all the saints, who are a holy priesthood, to offer up spiritual sacrifices to God; who are servants, not of sin, nor of Satan, nor of men, but of God and Christ; and who serve the Lord willingly and cheerfully, with much pleasure and delight, in righteousness and holiness, with reverence and godly fear, and without trusting to and depending on their service for salvation: and one principal branch of their service is praise, especially under the Gospel dispensation; in which all legal sacrifices are abolished, and the sacrifice of praise is continued; and which is pleasant and delightful work, and yet there is a backwardness to it; and therefore there is need of such an exhortation to excite unto it, and to repeat it, as follows: praise the name of the Lord; not any particular name, as Jehovah; but him himself, and the perfections of his nature; his holiness, justice, truth, faithfulness, power, goodness, grace and mercy. The repetition of the exhortation denotes either the abundance of praise to be given to the Lord, or the constancy and continuance of it; which ought to be done at all times, every day, since his mercies are new every morning. Some have thought the threefold repetition respects the trinity of Persons, who are each to be praised, as in Num 6:24, but this is doubtful, and perhaps not sufficient to build such a doctrine on; and especially since the first of these exhortations is the title of the psalm: however, this is a certain truth, that Jehovah, Father, Son, and Spirit, are to be praised.