By St. Theophan the Recluse
Comforting His disciples, the Lord said that it will be better for them if He rises to heaven, for upon rising, in place of Himself He will send the Comforter — the Spirit. The Holy Spirit has descended and abides in the Church, accomplishing in each believer the work of Christ. Each Christian is a communicant of the Spirit. This is something so necessary, that in fact whoever does not have the Spirit is not of Christ. Look closely at yourself — is the Spirit of grace within you? For it does not remain in everyone; it can depart. Here are the signs of His presence: first He finds a spirit of repentance and teaches a Christian to turn to God and correct his life; the spirit of repentance, accomplishing its work, passes the Christian on to a spirit of holiness and purity, which is succeeded, at last, by a spirit of adoption. The characteristic of the first is a work-loving zeal; the characteristic of the second is warmth and a sweet burning of the heart; the characteristic of the third is a feeling of adoption whereby the heart sighs to God: "Abba, Father!" (Mk. 14:36). Examine which of these levels you are on. If you are not on any of them, take care for yourself.