23 And the holy People inherited an eternal Kingdom; the holy people who were chosen instead of the People. For He provoked them to jealousy with a people that was not a people. And with a foolish people He angered them. And He set free the holy people. For lo! every covenant of God is freed from the burden of kings and princes. For even if a man has served the heathen, as soon as ever he draws near unto the covenant of God, he is set free. But the Jews are toiling in bondage among the Gentiles.
For thus he said about the Saints;— They shall inherit the Kingdom that is beneath the heaven. But if he had said it about them (the Jews), why are they toiling in service among the Gentiles? And if they say that it has not taken place as yet; then (we ask) is the Kingdom that shall be given to the Son of man, to be heavenly or earthly? And lo! The children of the Kingdom are sealed, and they have received their emancipation from this world. For since it exists now, it will not be willing to be subjected to the power of the King, Who shall come and take to Himself His Kingdom.
But it will guard His pledges with honour, that when He shall come to bring to nought the Kingdom, he may come upon them not in anger. For when He, Whose is the Kingdom, shall come in His second coming, He will take to Himself whatever He has given. And He Himself will be King for ever and ever. And His Kingdom shall not pass away, because it is an eternal Kingdom.
Source: Demonstrations (New Advent)