John Trapp on Psalms 47:3

Verſ. 3. He ſhall ſubdue the people under us] This was typified in the Government of the Iſraelites, then aſcendent in Davids days, but fulfilled when Chriſt rode abroad on his white Horſe, the Apoſtles, Conquering and to conquor, Rev. 6. Quando Britannorum inacceſſa Romanis loca Chriſto patuerint, as Tertullian hath it. Chriſt ſubdued the Britans and others, whom the victorious Romans could never come at. The Chaldee hath it, he ſhall kill the people under us, ſc. with the ſword of the Spirit, the Word; when the Law came, ſin revived, and I dyed, Rem. 7.9. The Hebrew is, He ſhall ſpeak the people under us; that is, he ſhall by the preaching of the Goſpel, powerfully perſwade Japhet to dwell in the tents of Shem, Gen. 9.27. Tremellius rendreth it,Jun. ex Aben-Ezra, & R. Judah. Cogit in caulam populos, he gathereth the people into the fold, viz. that there may be one Sheep-fold, and one Shepherd, as Joh. 10.16. Eph. 2.14.

And the Nations under our feet] Hence the Jews to this day dream (as did alſo the Diſciples, ſowred with their leaven) of an earthly Kingdom, wherein the Meſſiah at his coming ſhall ſubdue the Nations, and diſtribute their Provinces and wealth among his Jews. But Chriſts Kingdom is of another nature, and the Nations are already ſubdued to the Church, which remaineth one and the ſame, although the Jews be as branches broken off, and others ſet in their place, Rom. 11.24. Beſides, by the Nations under the Jews feet is meant (ſay ſome) that the Gentiles ſhould be Scholars, and the Jews School-maſters, as it were, unto them: for ſo fitting under the feet, or at the feet, ſignifieth in Scripture, Acts 22.3. Luke 10.39. 2 King. 2.5. The teacher was called Joſhebh, or Sitter; the Scholar Mithabbek, or one that lieth along in the duſt, in token of his humble ſubjection. And in this ſenſe Seneca ſome where ſaith, that the baſeſt of people (meaning the Jews) gave Laws unto all the world.