The strength and the power of God light up the face of the earth. The Holy Spirit is present in the Church of Christ for all time, so that it may be, always and in everything, a sign raised up before all nations, announcing to all men the goodness and the love of God. In spite of our great limitations, we can look up to heaven with confidence and joy: God loves us and frees us from our sins. The presence and the action of the Holy Spirit in the Church are a foretaste of eternal happiness, of the joy and peace for which we are destined by God. (…)
But our faith in the Holy Spirit must be complete. It is not a vague belief in his presence in the world, but a grateful acceptance of the signs and realities into which he has poured forth his power in a special way. When the Spirit of truth comes, our Lord tells us, “he will glorify me, for he will take of what is mine and declare it to you." The Holy Spirit is the Spirit sent by Christ to carry out in us the work of holiness that our Lord merited for us on earth.
There cannot be faith in the Holy Spirit if there is not faith in Christ, in his sacraments, in his Church. A man cannot act in accordance with his christian faith, cannot truly believe in the Holy Spirit, unless he loves the Church and trusts it. He cannot be a coherent Christian if he limits himself to pointing out the deficiencies and limitations of some who represent the Church, judging her from the outside, as though he were not her son.
(Christ is passing by, 128-130)