Carl Friedrich Keil and Franz Delitzsch Old Testament Commentary

(Heb.: v. 10) After this solo voice, the chorus again come on. The song is closed, as it was opened, by the whole congregation; and is rounded off by recurring to its primary note, praying for the accomplishment of that which is sought and pledged. The accentuation construes המּלך with יעננוּ as its subject, perhaps in consideration of the fact, that הושׁיעה is not usually followed by a governed object, and because thus a medium is furnished for the transition from address to direct assertion. But if in a Psalm, the express object of which is to supplicate salvation for the king, המלך הושׁיעה stand side by side, then, in accordance with the connection, המלך must be treated as the object; and more especially since Jahve is called מלך רב, in Psa 48:3, and the like, but never absolutely המלך. Wherefore it is, with Hupfeld, Hitzig, and others, to be rendered according to the lxx and Vulgate, Domine salvum fac regem. The New Testament cry Ὡσαννὰ τῷ υἱῷ Δαυίδ is a peculiar application of this Davidic "God bless the king (God save the king)," which is brought about by means of Psa 118:25. The closing line, Psa 20:9, is an expanded Amen.