John Trapp on Psalms 47:9

Verſ. 9. The Princes of the people are gathered together) Or, the voluntary of the people: The great ones diſdain not to meet with the meaneſt at the publick Aſſemblies, for performance of holy duties; but thither they fly one with another, as the Doves do to their windows, Iſa. 63.8. glorying in this, that they are Chriſts Vaſſals, as did Conſtantine, Valentinian, and Theodaſius, Socrates. thoſe three great Emperours, caſting their Crowns at his feet, and willing to come under the common yoke of his obedience, with the reſt of the people of the God of Abraham, the common ſort of Chriſtians.

For the Shields of the earth be long to God]. That is, thoſe Princes and Magiſtrates alſo, Hoſ. 4.18. Pſal. 89.18. belong to the covenant of election a though not many mighty not many noble are called, 1 Cor. 1.26. and it was grown to a Proverb, [illegible: 1 letter]mnium bonorum Principum imagines in [illegible: 1 word] annulo ſc[illegible: 1 letter]lpi poſſe. The Spaniſh Fryer was wont to ſay there were but few Princes in Hell; and why? becauſe there were but few in all. If ſuch ſhall ſhew themſelves ſhields to their people to protect them from wrong; and not ſharks rather to peel them, and pillage them; God will own and honour ſuch. Others thus; the ſhields of the Earth belong to the Lord, that is, the Militia of the World is his; he hath and can quickly raiſe the Poſſe comitatus of all Countries.

He is greatly exalted] How ſhould he be otherwiſe who hath ſogreat a command, and uſeth it for the defence of his people? Eſpecially if the Grandees of the earth become Religious; and draw on others by their example, and liberality? Magnates Magnetes.