Thy throne, O God, [is] for ever and ever,.... This verse and Ps 45:7 are cited in Heb 1:8; and applied to the Son of God, the second Person in the Trinity; and therefore are not an apostrophe to the Father, as some have said; nor will they bear to be rendered, "thy throne is the throne of God", or "thy throne is God"; or be supplied thus, "God shall establish thy throne".
But they are spoken of the Son of God, who is truly and properly God, the true God and eternal life; as appears by the names by which he is called, as Jehovah, and the like; by his having all divine perfections in him; by the works which he has wrought, and by the worship which is given unto him; and to whom dominion is ascribed, of which the throne is an emblem, Ge 41:40.