But let all those that put their trust in thee rejoice,.... Who trust not in themselves, in their own hearts, in their righteousness, or riches, or strength; but in the name, righteousness, and strength of the Lord: who betake themselves to him, and put all their confidence in him: let them rejoice in the salvation of the Lord, and in hope of eternal glory and happiness;let them even shout for joy: not only rejoice inwardly, but express their joy externally, with their voices, and in the loudest manner; and that always, the matter and foundation of a believer's joy always continues; and so does the grace itself: though it is not always in exercise, yet it is an everlasting joy; and with it the redeemed of the Lord will come to Zion, and no man will be able to take away their joy.
Which distinguishes it from the triumphing of the wicked, and the joy of the hypocrite, which is but for a moment;because thou defendest them, or "coverest them" ; with the feathers of divine protection, under the shadow of his wings, and with the hollow of his hand: so God preserves his people, keeps them by his power, as the apple of his eye, and is a wall of fire round about them.
Which is a good reason why they should rejoice, and shout for joy;let them also that love thy name; as all that put their trust in the, Lord do; they love the Lord himself, because of the perfections of his nature, and the works of his hands, and for what he has done for them: they love all they know of him; they love him in all his persons, Father, Son, and Spirit; and every name of his, by which he has made himself known.
They love, admire, and adore all his attributes and perfections, as they are displayed in the works of creation and providence; and especially in redemption by Jesus Christ, where they all gloriously meet together; and in whom God has proclaimed his name gracious and merciful.
They love his word, his Gospel, by which he is made known; and they love his people, on whom his name is called, and who call upon his name. And let such, says the psalmist,be joyful in thee: not rejoice in their boasting of their wisdom, strength, riches, and righteousness; all such rejoicing is evil: but in the Lord, in his grace, righteousness, and salvation.
He is the only true proper object of spiritual joy; and there is good reason for it, from what follows.