*Minor differences ignored. Grouped by changes, with first version listed as example.
In thy name shall they rejoice - In thee shall they rejoice, or find their happiness. In thy being; thy perfections; thy protection; thy government; thy favor.
All the day - That is, continually. It is their privilege, and it is their duty to rejoice always. Thou art always the same, and the happiness which is found in thy being and attributes at one time may be found at all times; thy promises are ever the same, and thy people may find happiness in them always. There is no reason why the people of God should not be constantly happy; they who have such a God, and such hopes as they are permitted to cherish, should be so. Compare the notes at Philippians 3:1; notes at Philippians 4:4.
And in thy righteousness - Under thy righteous government; or, in the knowledge of thy righteous character.
Shall they be exalted - See Proverbs 14:34. The effect of that knowledge shall be to exalt or to elevate them in moral character, in happiness, in the esteem of others, and in true prosperity. Compare 1-Timothy 4:8.
In thy name shall they rejoice - Or, "greatly exult," יגילון yegilun; "all that day," היום haiyom, the jubilee, referred to above.
And in thy righteousness - In the declaration of thy righteousness for the remission of sins that are past, Romans 3:25, Romans 3:26.
Shall they be exalted - They shall be justified freely from all things, be purified from all unrighteousness, grow in grace, and in the knowledge of Jesus Christ here below, and at last be exalted to his right hand to reign with him for ever. The jubilee was a type of the Gospel, and under that type the psalmist here speaks of the glorious advent of the Lord Jesus, and the great happiness of believers in him. Let it be observed that the letters in the above Hebrew words called paragogic, as nun in יהלכון yehallechun, and יגילון yegilun, always increase and deepen the meaning of the words to which they are attached.
In thy name shall they rejoice all the day,.... That know the joyful sound, and walk in the light of God's countenance, as they have reason to do; these will "rejoice" in the Lord himself, for his "name" is himself; in the perfections of his nature, as displayed in redemption and salvation by Christ; in him as the God of all grace, as their covenant God and Father in Christ, and the God of their salvation; and they will rejoice in Christ, in his name, in which is salvation, and therefore precious; in his person, blood, righteousness, sacrifice, and fitness; and that "all the day" long, continually; there is always reason, ground, and matter for rejoicing in Christ, though it is sometimes interrupted by sin, temptation, and desertion; see Philippians 4:4.
and in thy righteousness shall they be exalted; from a low estate of sin and misery to an high estate of grace and glory; from a state of condemnation and death to a state of justification of life; from being beggars on the dunghill, to sit among princes, and to inherit the throne of glory; such as are clothed with the righteousness of the Son of God are exalted to great honour, as to be admitted into the presence of the King of kings in raiment of needlework, to stand at his right hand in gold of Ophir, and to live and reign with him for evermore in his kingdom and glory.
in--or, "by"
thy righteousness--Thy faithful just rule.
glory--or, "beauty."
of their strength--They shall be adorned as well as protected.
our horn--exalt our power (Psalm 75:10; Luke 1:69).
Name - In the knowledge and remembrance of thy name, of thy infinite power and goodness.
*More commentary available at chapter level.