Why can’t Non-Catholics receive communion? The answer is simple. Love. Because we love our non-catholic brethren. And because we believe the Bible. We believe that receiving the blessed sacrament without preparing yourself appropriately puts your very soul in danger. It’s that sacred. It’s that real to us.

Belief #1: There are clear rules in Scripture about receiving communion. Receiving communion in an unworthy manner for both Catholics and non-Catholics puts your very soul in danger by making you guilty of the very blood of Christ. Consider 1 Corinthians 11:26-29: For as often as you eat this bread and drink this cup, you proclaim the Lord’s death until He comes. So then, whoever eats the bread or drinks the cup of the Lord in an unworthy manner will be guilty of sinning against the body and blood of the Lord. 28 Everyone ought to examine themselves before they eat of the bread and drink from the cup. 29 For anyone who eats and drinks without recognizing the body eats and drinks judgment on himself.

Belief #2: Transubstantiation: At the hands of a Catholic Priest, a successor to the original Apostles, the communion host undergoes transubstantiation. Transubstantiation is the conversion of the communion host into the body and blood of Christ upon consecration by a validly ordained Catholic priest. Only the appearances of bread and wine still remaining. Despite appearance, it is the Body, Blood, and Divinity of our Lord Jesus Christ. Consider John 6:63:

Need more proof? A mere review of Eucharistic Miracles might leave you dumbfounded. And be sure to consider the process by which these miracles have been validated before dismissing them.

Biblical evidence for the Real Presence: John chapter 6 and other support for the “real presence” doctrines.

How Can We Know Jesus is Really Present in the Eucharist? Is it crazy to believe in transubstantiation if the bread cannot be seen as a different species under the microscope?

The doctrine of the Real Presence asserts that in the Holy Eucharist, Jesus is literally and wholly present—body and blood, soul and divinity—under the appearances of bread and wine. Evangelicals and Fundamentalists frequently attack this doctrine as “unbiblical,” but the Bible is forthright in declaring it (cf. 1 Cor. 10:16–17, 11:23–29; and, most forcefully, John 6:32–71)…   [read more] 

Real Presence: Beware the Term As Used by Non-Catholic Christians: One of the reasons the term “Real Presence” has become a flexible friend is because it has been lifted from its full context. Historically, theologians spoke of “the real presence of Christ’s body and blood in the sacrament of the altar.” But now it has been shortened to the “Real Presence.” Reference to the body and blood has been quietly dropped and even the name of Christ omitted. As a result, for some people “Real Presence” has come to mean simply “the idea of the risen Lord” or “the Spirit of Christ” or even just “the fellowship of the church.” In fact, the term “Real Presence” could mean just about anything to anybody…   [read more]

Other Resources:

Real Presence Through the Ages: Jesus Adored in the Sacrament of the Altar: Quotes from saints and church fathers spanning the millennia going back to the early church show that the Apostles and their followers all believed in the real presence of Jesus Christ in the Eucharist.

The Most Straightforward Verse About the Eucharist in the Bible There is much that is remarkably clear in Scripture about the Blessed Sacrament, especially concerning the real presence.

The Eucharist in Scripture: Foreshadowed in the old testament and instituted in the New Testament, here is a comprehensive list of scriptures that support Catholic beliefs.