Roman Catechism 6.34

Chapter 6 — Part I: The Creed — Article IV: Suffered Under Pontius Pilate, Was Crucified, Dead, and Buried

Section 34. Finally, by taking away our sins He opened to us heaven, which was closed by the common sin of mankind. And this the Apostle pointed out when he said: We have confidence in the entering into the holies by the blood of Christ. Nor are we without a type and figure of this mystery in the Old Law. For those who were prohibited to return into their native country before the death of the high-priest typified that no one, however just and holy may have been his life, could gain admission into the celestial country until the eternal High-priest, Christ Jesus, had died, and by His death immediately opened heaven to those who, purified by the Sacraments and gifted with faith, hope, and charity, become partakers of His Passion.