Roman Catechism 3.50

Chapter 3 — Part I: The Creed — Article I: I Believe in God, the Father Almighty, Creator of Heaven and Earth

Section 50. God Preserves, Rules And Moves All Created Things — We are not, however, to understand that God is in such wise the Creator and Maker of all things that His works, when once created and finished, could thereafter continue to exist unsupported by His omnipotence. For as all things derive existence from the Creator's supreme power, wisdom, and goodness, so unless preserved continually by His Providence, and by the same power which produced them, they would instantly return into their nothingness. This the Scriptures declare when they say: How could anything endure if thou wouldst not? or be preserved, if not called by thee?