Roman Catechism 7.10

Chapter 7 — Part I: The Creed — Article V: He Descended into Hell; the Third Day He Rose Again from the Dead

Section 10. But although Christ descended into hell, His supreme power was in no degree lessened, nor was the splendour of His sanctity obscured by any blemish. His descent served rather to prove that whatever had been foretold of His sanctity was true; and that, as He had previously demonstrated by so many miracles, He was truly the Son of God.