Thou wilt prolong the King's life,.... Or "add days to the days of the King" . Meaning either himself, who, though his life was in danger by fighting with the Syrians and Edomites, or rather through the conspiracy of his son; yet was assured that he should yet live many years more, and especially in his posterity; and that his kingdom would be established for ever, as was promised him, 2Sa 7:12.
Or rather the King Messiah, so the Targum: and Kimchi observes, that if this psalm respects the captivity, the King is the King Messiah: it may be understood of his life as man; who, though he died, rose again, and lives for evermore; and that, as to the glory of God the Father, so to the good of his people, for whom he makes intercession; and of the continuance of his spiritual seed, in whom he may be said to live, and his days be prolonged, Isa 53:10; and of the duration of his kingdom, of which there will be no end.
For it is an everlasting one, as follows:[and] his years as many generations; he living, and his posterity and kingdom continuing, age after age. The Targum is,"his years as the generations of this world, and the generations of the world to, come.'
' Pyowt Klm ymy le Mymy "dies super dies regis adjicieo", V. L.