Luke 22:19-20 in the King James Version of the Bible reads, "And he took bread, and gave thanks, and brake it, and gave unto them, saying, This is my body which is given for you: this do in remembrance of me. Likewise also the cup after supper, saying, This cup is the new testament in my blood, which is shed for you."

This passage comes from the last supper, a significant event in the life of Jesus and in Christian theology. It is here that Jesus establishes the sacrament of communion, also known as the Lord's Supper or Eucharist. The sacrament of communion is a central aspect of Christian worship and is celebrated by believers all over the world.

In this passage, Jesus takes bread, gives thanks, breaks it, and gives it to his disciples, telling them that it is his body given for them. He then takes the cup, gives thanks, and tells them that it is the new testament in his blood, which is shed for them. This imagery of the bread and wine representing Jesus' body and blood is central to the Christian understanding of communion.

There are several important themes and teachings present in this passage. One of the key themes is sacrifice. Jesus describes the bread and wine as symbols of his body and blood, which are given and shed for the disciples. This foreshadows Jesus' sacrificial death on the cross, which is central to Christian belief. The idea of sacrifice is also central to the Christian life, as believers are called to take up their cross and follow Jesus, willing to sacrifice their own desires and comforts for the sake of others.

Another important theme in this passage is remembrance. Jesus instructs his disciples to partake in the bread and wine in remembrance of him. This act of remembrance is not simply a mental exercise, but a reenactment of the events of the last supper and a participation in Jesus' sacrifice. Through the sacrament of communion, Christians are able to remember and participate in the life, death, and resurrection of Jesus.

The symbolism in this passage is rich and significant. The bread and wine represent the body and blood of Jesus, and the act of breaking the bread and pouring the wine symbolizes Jesus' sacrificial death. The new testament in his blood signifies the new covenant that Jesus establishes through his sacrifice, bringing about forgiveness of sins and reconciliation between God and humanity. The bread and wine also represent the spiritual nourishment that believers receive through their participation in the sacrament of communion.

The context of this passage is important for understanding its significance. The last supper takes place on the night before Jesus' crucifixion, and it is in this context that Jesus establishes the sacrament of communion. Knowing that his time on earth is short, Jesus uses this final meal with his disciples to teach them important truths about his impending death and resurrection, and to prepare them for the mission that they will carry out after his departure.

In conclusion, Luke 22:19-20 contains rich and profound teachings about sacrifice, remembrance, and the symbolism of communion. This passage is a central part of Christian theology and is foundational to the practice of communion in the Christian church. Through the symbols of the bread and wine, Christians are able to remember and participate in the life, death, and resurrection of Jesus, and to be nourished spiritually through their participation in the sacrament of communion.