Communion is a symbol of salvation. The broken bread pictures the broken body of Jesus. (Mark 14:22)
The fruit of the vine pictures the shed blood of Jesus. (Mark 14:23-24)
The partaking of the two elements portrays the new covenant (agreement) established by Jesus' death. (Matthew 26:28)
We observe communion because Jesus commanded it. (Matthew 26:26-27)
Communion is Jesus' memorial (unlike stones, statues, etc). (Luke 22:19,20)
Communion is also referred to as the Lord's table. (1Corinthians 10:16,21)
Communion is a proclamation of the Savior's death. (1Corinthians 11:26)
Communion is to be observed until Christ returns. (1Corinthians 11:26)
We are warned not to partake of communion in an unworthy manner. (1Corinthians 11:27-32)