Pope St. John Paul II on Spiritual Communion:
“In the Eucharist, ‘unlike any other sacrament, the mystery [of communion] is so perfect that it brings us to the heights of every good thing: Here is the ultimate goal of every human desire, because here we attain God and God joins himself to us in the most perfect union.’ Precisely for this reason it is good to cultivate in our hearts a constant desire for the sacrament of the Eucharist. This was the origin of the practice of ‘spiritual communion,’ which has happily been established in the Church for centuries and recommended by saints who were masters of the spiritual life. St. Teresa of Jesus wrote: ‘When you do not receive communion and you do not attend Mass, you can make a spiritual communion, which is a most beneficial practice; by it the love of God will be greatly impressed on you’”
Acts of Spiritual Communion
IN union, dear Lord, with all the faithful at every altar of thy Church where the blessed Body and Blood are being offered to the Father, I desire to offer thee praise and thanksgiving. I believe thou art truly present in the Most Holy Sacrament. And since I cannot now receive thee sacramentally, I beseech thee to come spiritually into my heart. I unite myself unto thee, and embrace thee with all the affections of my soul. Let me never be separated from thee. Let me live and die in thy love. Amen.
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I WORSHIP thee, Lord Jesus, and kneeling unto thee, as thou didst come to Mary, I pray thee come to me. O most loving Jesus, O most blessed Saviour, come to me, I beseech thee, and unite me to thyself. Thou I cannot now receive thee sacramentally, yet I believe that thou art able, even when received by faith and desire only, to heal, enrich and sanctify me. Come thou spiritually into my heart. I desire to unite myself to thee with all the affections of my soul. Possess me wholly; let the consuming fire of thy love absorb me, and thy presence abide so intimately in me, that it will be no longer I that live, but thou who livest in me. Come, Lord Jesus, and dwell in my heart. Amen.