Adam Clarke's Bible Commentary Verse 1. Rejoice in the Lord ] It is very likely that the last verse of the preceding Psalm was formerly the first verse of this. As this Psalm has no title, the verse was the more easily separated. In the preceding Psalm we have an account of the happiness of the justified man: in this, such are taught how to glorify God, and to praise him for the great things he had done for them.
Praise is comely for the upright. ] It is right they should give thanks to Him, who is the fountain whence they have received all the good they possess and thankfulness becomes the lips of the upright.
Matthew Henry Commentary
Verses 1-11 - Holy joy is the heart and soul of praise, and that is here pressed upo the righteous. Thankful praise is the breath and language of holy joy Religious songs are proper expressions of thankful praise. Ever endowment we possess, should be employed with all our skill an earnestness in God's service. His promises are all wise and good. Hi word is right, and therefore we are only in the right when we agre with it. His works are all done in truth. He is the righteous Lord therefore loveth righteousness. What a pity it is that this earth which is so full of the proofs and instances of God's goodness, shoul be so empty of his praises; and that of the multitudes who live upo his bounty, there are so few who live to his glory! What the Lord does he does to purpose; it stands fast. He overrules all the counsels of men, and makes them serve his counsels; even that is fulfilled, whic to us is most surprising, the eternal counsel of God, nor can any thin prevent its coming to pass.
Original Hebrew רננו7442 צדיקים6662 ביהוה3068 לישׁרים3477 נאוה5000 תהלה׃8416