יִ֥תְיַצְּב֨וּ ׀ מַלְכֵי־אֶ֗רֶץ וְרוֹזְנִ֥ים נֽוֹסְדוּ־יָ֑חַד עַל־יְ֝הוָה וְעַל־מְשִׁיחֽוֹ׃
די מלכים פֿון דער ערד שטעלן זיך אױף, און די פֿירשטן עֵצהן זיך אין אײנעםאױף גאָט און אױף זײַן געזאַלבטן:
Rashi
Kings of a land stand up and nobles take counsel, etc. Heb. רוזנים, senors (seigneurs) in Old French, lords.
Radak
The kings of the land take their stand: – for all the satraps of the Philistines had taken their stand with one consent and in agreement to come to fight with David. And he calls them “kings” and “rulers,” although we have not seen any other passage where he describes them otherwise than as “satraps” of the Philistines, who in their pride were imagining themselves kings, though they were not so. Possibly also there were assembled with them other kings from the nations.
Ibn Ezra
They take their stand (יִ֥תְיַצְּב֨וּ - yityatzvu): The kings and the regents (roznim - also nobles/rulers) [act] together with the nations [mentioned in v. 1]. And nosdu-yachad (נוֹסְדוּ־יָ֑חַד - they intrigue/conspire together): [Nosdu] is from the root sod (סוֹד - secret, council, conspiracy). Behold, this follows the pattern of (Psalm 35:1) "Contend (Rivah), O LORD, with those who contend with me (yerivai)," where [yerivai] is from the root rav (רב - contend, strive), which is a hollow root (me-'alumei ha-ayin - i.e., middle root letter is Vav or Yod) related to the noun riv (רִיב - strife). [Ibn Ezra implies a similar relationship between the verb nosdu and the noun sod]. The yod in yerivai is transformed and it represents a defective adjectival form. Alternatively, [nosdu] is from the root yesod (יְסוֹד - foundation), [implying they establish a common foundation or plan together]. According to the opinion that this psalm, which the poet composed, was said about David (or that he [David] prophesied about himself)—behold, we find that many nations were under David's control [making such a rebellion historically plausible]. And if [the psalm is] about the Messiah, the matter [of widespread opposition] is even clearer.
Rashi
take counsel Heb. נוסדו, an expression of counsel (סוד), furt konsilez in Old French (furent conseilles), they hold counsel (see below 55:15). And what is the counsel?...