Psalms 72:7

7.In his days shall the righteous flourish It is unnecessary for me frequently to repeat what I have once stated, that all these sentences depend upon the first verse. David, therefore, prayed that the king might be adorned with righteousness and judgment, that the just might flourish and the people prosper. This prediction receives its highest fulfillment in Christ. It was, indeed, the duty of Solomon to maintain the righteous; but it is the proper office of Christ to make men righteous. He not only gives to every man his own, but also reforms their hearts through the agency of his Spirit. By this means he brings righteousness back, as it were, from exile, which otherwise would be altogether banished from the world. Upon the return of righteousness there succeeds the blessing of God, by which he causes all his children to rejoice in the way of making them to perceive that under their King, Christ, every provision is made for their enjoying all manner of prosperity and felicity. If any would rather take the word peace in its proper and more restricted signification, I have no objections to it. And, certainly, to the consummation of a happy life, nothing is more desirable than peace; for amidst the turmoils and contentions of war, men derive almost no good from having an abundance of all things, as it is then wasted and destroyed. Moreover, when David represents the life of the king as prolonged to the end of the world, this shows more clearly that he not only comprehends his successors who occupied an earthly throne, but that he ascends even to Christ, who, by rising from the dead, obtained for himself celestial life and glory, that he might govern his Church for ever.