What does the Bible say about eating the flesh and drinking the blood of Christ?

In John 6, Jesus emphasizes the necessity of eating His flesh and drinking His blood to have eternal life. This teaching signifies the deep relationship between Christ and believers; to consume Christ is to accept His atoning sacrifice and to believe in Him for salvation. Verse 53 states, 'Except you eat the flesh of the Son of Man and drink his blood, you have no life in you.' Here, Jesus conveys that true life comes through a spiritual union with Him, where His sacrifice becomes our sustenance. The symbolic act of eating and drinking represents a believer’s faith and dependence upon Christ for salvation and spiritual nourishment.