7 In such a way God's goodness bears witness to the divinity of the Church. He makes her victorious in that painful battle against the errors and sins that creep into her ranks. Through this victory He verifies the words of Christ: "The gates of hell shall not prevail against it." In her day-to-day living He fulfills the promise, "Behold, I am with you all days, even unto the consummation of the world." Finally, He is the witness of that mysterious power of the other Paraclete (Who Christ promised would come immediately after His ascension into heaven), who continually lavishes His gifts upon her and serves as her defender and consoler in all her sorrows. This is the Spirit Who will "dwell with you forever, the Spirit of truth whom the world cannot receive, because it neither sees him nor knows him...he will dwell with you and be in you." The life and strength of the Church flows forth from this font. As the ecumenical Vatican Council teaches, this divine power sets the Church above every other society by those obvious notes which mark her "as a banner raised up among the nations."
Source: Editae Saepe (Vatican.va)