Psalm 47:7

For God is the King of all the earth: sing ye praises with understanding.

For God is the King of all the earth,.... Or "the king of all the earth is God" {e}; the same that is ascended into heaven, and is King of saints, even Christ Jesus; and so he will appear to be, especially in the latter day; See Gill on "Psalms 47:2";

sing ye praises with understanding; or, as De Dieu renders it, to him that understandeth, that is, to God the only wise, whose understanding is infinite; even to Christ, who, as God, knows all things; and, as man and Mediator, is of quick understanding, and has all the treasures of wisdom and knowledge in him; so R. Obadiah, "sing of him who understands"; or, "sing ye praises, O everyone that understandeth" {f}; that is, how to sing, as everyone does not; this is the sense of Aben Ezra and Kimchi; or "with understanding", as we render it; with understanding of what is sung. The Apostle Paul seems to refer to this passage in 1 Corinthians 14:15. The Targum renders it, "with a good understanding".

{e} So Junius & Tremellius, Piscator, Cocceius, Michaelis.
{f} lykvm wrmz "canite, intelligens", Montanus; i.e. "unusquisque", Vatablus.