It’s not a new observation, but it seems appropriate after such an extended amount of attention on the resurrection (in 1 Corinthians 15) to note that when Paul delivered the practice and reason for communion a few chapters earlier he did not mention the resurrection at all.
As Paul explained, Jesus gave thanks and then gave bread to His disciples and said “This is my body which is for you,” without adding “and it will be raised for you, too.” Jesus again gave thanks and then gave a cup of wine to His disciples and said, “This cup is the new covenant in my blood,” and didn’t chase that with “that guarantees you a sweeter cup in the resurrection.” And Paul’s summary of all this was:
For as often as you eat this bread and drink the cup, you proclaim the Lord’s death until He comes. (1 Corinthians 11:26)
The Corinthians knew and believed that Jesus was risen. The fact that we wait “until He comes” is also a clue in the verse that He is not still dead. And yet, for as much as we could not be certain of salvation without the resurrection, our time each week at the Lord’s Table proclaims the Lord’s death.
Though we believe in the resurrection of Jesus’ body, and the continuity of His body before and after His burial, the bread and the wine remind us of His perishable seed. They remind us of Him being sown in dishonor, in weakness. And, among many things, they remind us that a seed well sown in God’s sovereignty and by His grace is not sown in vain.