Arise, O God, judge the earth: for you shall inherit all nations.
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Augustine of Hippo
5. And therefore that this vice may be cured, in the person of the Prophet himself it is said, "Arise, O God, and judge the earth" (ver. 8); for the earth swelled high when it crucified Thee: rise from the dead, and judge the earth. "For Thou shall destroy among all nations." What, but the earth? that is, destroying those who savour of earthly things, or destroying the feeling itself of earthly lust and pride in believers; or separating those who do not believe, as earth to be trodden under foot and to perish. Thus by His members, whose conversation is in heaven, He judges the earth, and destroys it among all nations. But I must not omit to remark, that some copies have, "for Thou shalt inherit among all nations." This too may be understood agreeably to the sense, nor does anything prevent both meanings existing at once. His inheritance takes place by love, which in that He cultivates by His commands and gracious mercy, He destroys earthly desires. ...
Nations. Those whom thou hast appointed judges, prevaricate, Genesis xviii. 25. (Calmet)
Come, therefore, thyself, Lord Jesus, (Apocalypse xxii. 20.) to whom all nations were promised for an inheritance. (Berthier) (Psalm ii. 7.)
His appearance at the last day is described in the 49th psalm; and most of the Fathers here discover a clear prediction of the conversion of the Gentiles. (Calmet) ...