Catholics believe that during communion, the bread and wine literally turn into the body and blood of Jesus. This is called transubstantiation. I can’t find any Biblical support to show the bread and wine turns into the physical body of Jesus when a priest blesses it.
Communion is symbolic of two higher meanings. It's a betrothal ceremony between the Messiah and his bride. It’s also symbolic of taking in the essentials needed for life.
The Betrothal
The Church is the bride and Jesus is the groom. 2 Corinthians 11:2, For I feel a divine jealousy for you, since I betrothed you to one husband, to present you as a pure virgin to Christ.
The groom offers a marriage covenant called a Ketubah. Within the
Ketubah, it lists the price for the bride, the gifts he was willing to give her
and what he is willing to provide for his wife during their marriage. If the
Ketubah is agreed upon by both parties, the bride and groom each take a drink
of wine from the same cup, to confirm they agree to the marriage contract. 1 Corinthians
11:25, This cup is the new covenant in my blood. Once they drink out of the same cup, they have entered a legal contract and are now betrothed in
marriage. At the wedding feast the bride and groom will
once again drink from the same cup signifying the marriage. Matthew 26:29, I tell
you, I will not drink from this fruit of the vine from now on until that day
when I drink it new with you in my Father's kingdom.
There is also a great video on Rumble called, Before the Wrath. It explains how the last supper/communion was a betrothal ceremony. You can read more about this on my article called, The Jewish Wedding Custom and Jesus.
The Essentials of Life
The eucharist also represents life in God. There are three basic elements we need to survive. We need air, food and water. Each member of the Trinity is symbolic of those basic life essentials.
God the Father is our breath. Job 33:4, The Spirit of God has made me, and the breath of the Almighty gives me life.
God the Son is our food. John 6:35, Jesus said to them, “I am the bread of life; whoever comes to me shall not hunger, and whoever believes in me shall never thirst.
God the Holy Spirit is our water. John 7:37-39, On the last day, that great day of the feast, Jesus stood and cried out, saying, “If anyone thirsts, let him come to Me and drink. He who believes in Me, as the Scripture has said, out of his heart will flow rivers of living water.” But this He spoke concerning the Spirit, whom those believing in Him would receive; for the Holy Spirit was not yet given, because Jesus was not yet glorified.
The Symbolism
During the eucharist, Jesus doesn’t actually turn into bread, nor does the bread turn into Jesus. Jesus ate the bread himself. He’s not a cannibal. If the wine turned into his actual blood, and he told someone to drink it, that would contradict his own scriptures. Leviticus 17:10, And whatever man of the house of Israel, or of the strangers who dwell among you, who eats any blood, I will set My face against that person who eats blood, and will cut him off from among his people.
The bread and wine are symbolic, just like the many other symbolisms Jesus uses in scripture. Jesus says he is a cornerstone, the bright and morning star, a shepherd, the true vine, and the lion of Judah.
When Jesus said, "I am the door," (John 10:7,9) was he a literal door? He didn't say, I am a representation of a door.
John the Baptist says “Behold, the Lamb of God” (John 1:29). He doesn’t preface that with saying it’s symbolic, but it’s clearly understood that Jesus is symbolic of the Passover lamb.
Jesus is symbolic of the bread of life. It says to “do this in remembrance of me” (Luke 22:19 & 1 Corinthians 11:24-25).
John 6:63, It is the Spirit who gives life; the flesh profits nothing. The words that I speak to you are spirit, and they are life.
A One Time Sacrifice
Hebrews 10:10, By that will we have been sanctified through the offering of the body of Jesus Christ ONCE for all. Not weekly at communion.
Hebrews 7:27, Unlike the other high priests, he does not need to offer sacrifices day after day, first for his own sins, and then for the sins of the people. He sacrificed for their sins once for all when he offered himself. See also Hebrews 9:10 & Romans 6:10.
1 Peter
3:18, For
Christ also suffered once for sins, the righteous for the unrighteous,
to bring you to God. He was put to death in the body but made alive in the
Spirit.
