Roman Catechism 8.16

Chapter 8 — Part I: The Creed — Article VI: He Ascended into Heaven, Sitteth at the Right Hand of God, the Father Almighty

Section 16. Again, He ascended to prove thereby that His kingdom is not of this world. For the kingdoms of this world are earthly and transient, and are based upon wealth and the power of the flesh; but the kingdom of Christ is not, as the Jews expected, earthly, but spiritual and eternal. Its resources and riches, too, are spiritual, as He showed by placing His throne in the heavens, where they are counted richer and wealthier who seek most earnestly the things that are of God, according to these words of St. James: Hath not God chosen the poor in this world, rich in faith, and heirs of the kingdom which God hath promised to them that love him?