Read Luke 22:1-23.
"And as they were eating, Jesus took bread, and blessed, and brake it; and he gave to the disciples, and said, Take, eat; this is my body, And he took a cup, and gave thanks, and gave to them, saying, Drink ye all of it; for this is my blood of the covenant."
The first step in drinking of the blood and eating of the body of Jesus is to resolve this whole Scripture back into the primal ideas. The only way to appropriate these ideas is through the very highest activity of mind as in prayer.
The benefit of taking Holy Communion is the establishing of our acceptance of the Christ whose coming we celebrate within our mind and heart. The bread used in the churches symbolizes substance, which we consider the Lord's body, a body of spiritual ideas; and the wine used symbolizes His blood, which we consider life, or the circulation of divine ideas in our consciousness that will purify our mind and heart and renew our strength, freeing us from all corruption, sin, and evil, and bringing forth in us the abundant, unlimited life of God. Through the appropriation and assimilation of the substance and life in our own consciousness, we blend our minds with the Father-Mind and there is a harmonizing of every fiber of our body with the Christ body, which is life and light. As our mind and heart are cleansed of untrue thoughts and beliefs, and as we feed on living ideas, our body takes on the life and light of our divinity, and eventually will become living light.
"God's pure life and substance are constantly renewing and rebuilding His holy temple, my body."