1 Corinthians 10:16-17
"The cup of blessing which we bless, is it not the communion of the blood of Christ? The bread which we break, is it not the communion of the body of Christ? 17 For we, though many, are one bread and one body; for we all partake of that one bread."
I usually say the same words right before we eat the bread and drink the wine. They turn the rhetorical questions in 1 Cor 10 into statements. The bread and wine are a communion in the body of Christ. Communion is what we usually call this part of the service. It’s become a churchy word. It also means sharing together, a participation, a being together. When we eat and drink in faith, we are truly sharing in the life of Jesus, being with Him, sharing the benefits of His death for us and His resurrected and ascended glory now. So this sacrament is a means of grace, or a means of deliverance. Here we find one of our earthly means of deliverance God has ordained to draw us to Him.