Psalms 72:11

11.And all kings shall prostrate themselves before him. This verse contains a more distinct statement of the truth, That the whole world will be brought in subjection to the authority of Christ. The kingdom of Judah was unquestionably never more flourishing than under the reign of Solomon; but even then there were only a small number of kings who paid tribute to him, and what they paid was inconsiderable in amount; and, moreover, it was paid upon condition that they should be allowed to live in the enjoyment of liberty under their own laws. While David then began with his own son, and the posterity of his son, he rose by the Spirit of prophecy to the spiritual kingdom of Christ; a point worthy of our special notice, since it teaches us that we have not been called to the hope of everlasting salvation by chance, but because our heavenly Father had already destined to give us to his Son. From this we also learn, that in the Church and flock of Christ there is a place for kings; whom David does not here disarm of their sword nor despoil of their crown, in order to admit them into the Church, but rather declares that they will come with all the dignity of their station to prostrate themselves at the feet of Christ.