Maundy Thursday is a Christian observance that commemorates the Last Supper of Jesus Christ with his disciples, which took place the night before his crucifixion. The word "Maundy" comes from the Latin "mandatum," meaning "commandment," referring to Jesus' commandment to his disciples to love one another as he had loved them (John 13:34).Maundy Thursday emphasizes themes of service, love, and sacrifice.