Psalm 45:17

I will make thy name to be remembered in all generations
These are the words of the psalmist, spoken to the King Messiah, declaring what he would do with respect to him; cause his name, that is, not any particular name or title of his, but rather his Gospel, the good matter he had endited concerning him; or he himself to be remembered, desired, loved, thought of, called upon, and praised in all succeeding generations; and which he did by penning of this psalm, which has been the occasion of the remembrance of Christ's name in all ages, to the present time; and of its being remembered by us now, and the same use it will have in time to come; see ( 2 Peter 1:13 2 Peter 1:15 ) ;

therefore shall the people praise thee for ever and ever;
because of the excellencies of his person; and particularly because of his greatness and glory as a King; as well as for all mercies, temporal and spiritual, they have from him; and this is but just, meet, and lovely, and is and will be their employment, as long as they live in this world, and to all eternity. This must be understood not of all people, but of God's chosen and covenant people; those that are given to Christ to be his people, and whom he has redeemed and purified to himself, a peculiar people; and particularly his people among the Gentiles: and so the Targum interprets it of such that are proselytes.