Preparing for the Sacrament of Holy Communion
Because of the intimate connection of the Sacrament of Holy Communion to our life in Christ, we must be free of any grave or mortal sin before receiving it, as St. Paul explained in 1 Corinthians 11:27-29. Otherwise, as he warns, we receive the sacrament unworthily, and we “eateth and drinketh damnation” to ourselves.
If we are aware of having committed a mortal sin, we must participate in the Sacrament of Confession first. The Church sees the two sacraments as connected, and urges us, when we can, to join frequent Confession with frequent Communion.
The Effects of the Sacrament of Holy Communion
Receiving Holy Communion worthily brings us graces that affect us both spiritually and physically. Spiritually, our souls become more united to Christ, both through the graces we receive and through the change in our actions that those graces effect. Frequent Communion increases our love for God and for our neighbor, which expresses itself in action, which makes us more like Christ. Physically, frequent Communion relieves us of our passions. By receiving Christ’s Body and Blood, our own bodies are sanctified, and we grow in our likeness to Christ.