In the closing verses of the Psalm, the views of the Psalmist seem to sweep beyond the limits of an earthly kingdom. His eye seems to embrace the wide-spreading dominion of Messiah; at all events, he dwells on those features of his own kingdom that were typical of the all-embracing kingdom of the Gospel: "Thou hast made me the head of the nations; a people whom I have not known shall serve me. As soon as they hear of me they shall obey me; the strangers shall submit themselves unto me." The forty-ninth verse is quoted by St. Paul (Rom. xv. 9) as a proof that in the purpose of God the salvation of Christ was designed for Gentiles as well as Jews. "It is beyond doubt," says Luther, "that the wars and victories of David prefigured the passion and resurrection of Christ." At the same time, he admits that it is very doubtful how far the Psalm applies to Christ, and how far to David, and he declines to press the type to particulars. But we may surely apply the concluding words to David's Son: "He showeth loving-kindness to his anointed, to David and to his seed for evermore."
It is interesting to mark the military aspect of the kingdom gliding into the missionary. Other psalms bring out more clearly this missionary element, exhibit David rejoicing in the widening limits of his kingdom, in the wider diffusion of the knowledge of the true God, and in the greater happiness and prosperity accruing to men. And yet, perhaps, his views on the subject were comparatively dim; he may have been disposed to identify the conquests of the sword and the conquests of the truth instead of regarding the one as but typical of the other. The visions and revelations of his later years seem to have thrown new light on this glorious subject, and though not immediately, yet ultimately, to have convinced him that truth, righteousness, and meekness were to be the conquering weapons of Messiah's reign.