Jesus celebrated the Last Supper with His disciples and thereby instituted the Lord’s Supper, also called Communion (Luke 22:19-20). Some Christian churches observe a special Communion service on Maundy Thursday in memory of Jesus’ Last Supper with His disciples. The word Maundy is derived from the Latin word for “command.” The “Maundy” in “Maundy Thursday” refers to the command Jesus gave to the disciples at the Last Supper, that they should love and serve one another.
Second, Jesus washed the disciples’ feet as an act of humility and service, thereby setting an example that we should love and serve one another in humility (John 13:3-17). Some Christian churches observe a foot-washing ceremony on Maundy Thursday to commemorate Jesus’ washing the feet of the disciples.
Doing a foot-washing in remembrance of how Christ humbled Himself and washed the feet of the disciples is a powerful reminder of how we are to live the Christian life (Philippians 2:1-11).