Kings of the earth, etc. He now turns his address to men, with a respect to whom it was that he called for a declaration of God's praises from creatures, both above and from beneath. As kings and princes are blinded by the dazzling influence of their station, so as to think the world was made for them, and to despise God in the pride of their hearts, he particularly calls them to this duty; and, by mentioning them first, he reproves their ingratitude in withholding their tribute of praise when they are under greater obligations than others. As all men originally stand upon a level as to condition, the higher persons have risen, and the nearer they have been brought to God, the more sacredly are they bound to proclaim his goodness. The more intolerable is the wickedness of kings and princes who claim exemption from the common rule, when they ought rather to inculcate it upon others and lead the way. He could have addressed his exhortation at once summarily to all men, as indeed he mentions peoples in general terms; but by thrice specifying princes he suggests that they are slow to discharge the duty, and need to be urged do it. Then follows a division according to age and sex, to show that all without exception are created for this end, and should unitedly devote their energies to it. As to old men, the more God has lengthened out their lives the more should they be exercised in singing his praises; but he joins young men with them, for though they have less experience from continued habit, it will be inexcusable if they do not acknowledge the great mercy of God in the vigor of their lives. In speaking of girls or virgins, the particle gm, gam, also, is not merely expletive, but added to make the words more emphatical, conveying the truth that even the young women who are not so liberally educated as the male sex, being considered as born for domestic offices, will omit their duty if they do not join with the rest of the Church in praising God. It follows that all from the least to the greatest are bound by this common rule.

Kings of the earth, and all people - This would embrace all, as all are included in the idea of the rulers and the ruled.
Princes, and all judges of the earth - Those of exalted rank; those high in authority. This is proper in itself considered, as they are people like other people; and proper as an example to the rest. None of any rank are exempt from the obligation to praise God; none are cut off from the privilege.

Kings of the earth - As being representatives of the Most High; and all people - the nations governed by them. Princes, as governors of provinces, and all judges executing those laws that bind man to man, and regulate and preserve civil society, praise God, from whom ye have derived your power and influence: for by him kings reign. And let the people magnify God for civil and social institutions and for the laws by which, under him, their lives and properties are preserved.

(g) Kings of the earth, and all people; princes, and all judges of the earth:
(g) For the greater gifts that any has received and the more high that one is preferred, the more bound is he to praise God for the same: but neither high nor low condition or degree can be exempted from this duty.

Kings of the earth, and all people,.... The order of the creation is pretty much observed throughout the whole of this account; and as man was made last of all, so here he is called upon last to praise the Lord; and the chief among men are begun with, "the kings of the earth", of the several nations of the earth divided into kingdoms, over which some are set as supreme: and these have reason to praise the Lord, who has raised them to such dignity, for promotion comes not by chance, but by the Lord, who sets up kings and puts them down at his pleasure; and also for those gifts bestowed upon them, qualifying them for government, for it is by him kings reign and princes decree justice; and likewise for the preservation of them, for it is he that gives salvation to kings, and continues them for usefulness, notwithstanding all plots and conspiracies against them, Psalm 144:9; see Psalm 75:6; "and all people"; their subjects, as they should submit unto them and pray for them, so should praise the Lord on their account, when they rule well, protect and defend them in their persons, property, and liberties, Proverbs 29:2;
princes, and all judges of the earth: the sons of kings, princes of the blood, heirs of the crown; or nobles, ministers of state, counsellors, and, all subordinate magistrates, who are in high places of honour, profit, and trust, and so should praise the Lord, by whom they are brought to such honour; and when they fill up their places, and discharge their trust aright, the people have reason to be thankful for them; and especially for the "judges of the earth", when they are men fearing God and hating covetousness, and impartially minister justice and judgment; see Psalm 2:10.

Next all rational beings, from the highest in rank to little children.
princes--or, military leaders.