Calvin on Psalm 72

He is interesting on how the Psalm applies not exclusively but ultimately to Christ:

"Those who would interpret it simply as a prophecy of the kingdom of Christ, seem to put a construction upon the words which does violence to them; and then we must always beware of giving the Jews occasion of making an outcry, as if it were our purpose, sophistically, to apply to Christ those things which do not directly refer to him. But as David, who was anointed king by the commandment of God, knew that the terms upon which he and his posterity possessed the kingdom were, that the power and dominion should at length come to Christ; and as he farther knew that the temporal well-being of the people was, for the time, comprehended in this kingdom, as held by him and his posterity, and that from it, which was only a type or shadow, there should at length proceed something far superior — that is, spiritual and everlasting felicity; knowing, as he did, all this, he justly made the perpetual duration of this kingdom the object of his most intense solicitude, and prayed with the deepest earnestness in its behalf, — reiterating his prayer in his last moments, with the view of distinctly testifying, that of all his cares this was the greatest. What is here spoken of everlasting dominion cannot be limited to one man, or to a few, nor even to twenty ages; but there is pointed out the succession which had its end and its complete accomplishment in Christ."