Various Christian denominations place greater or lesser emphasis on what is known as the Christian Year. I grew up in one that emphasized only Christmas and Easter, and observed Lent only because the local ministers' council cooperated in a Lenten series of services. Kevin DeYoung helpfully defines Maundy Thursday for people like me:
.... If you've never heard the term, it's not Monday-Thursday (which always confused me as a kid), but Maundy Thursday, as in Mandatum Thursday. Mandatum is the Latin word for "command" or "mandate", and the day is called Maundy Thursday because on the night before his death Jesus gave his disciples a new command. "A new commandment I give to you, that you love one another: just as I have loved you, you also are to love one another" (John 13:34).DeYoung, Restless, and Reformed: Maundy Thursday
At first it seems strange that Christ would call this a new command. After all, the Old Testament instructed God's people to love their neighbors and Christ himself summarized the law as love for God and love for others. So what's new about love? What makes the command new is that because of Jesus' passion there is a new standard, a new examplar of love.
There was never any love like the dying love of Jesus. It is tender and sweet (John 13:33). It serves (John 13:2-17). It loves even unto death (John 13:1). Jesus had nothing to gain from us by loving us. There was nothing in us to draw us to him. But he loved us still, while we were yet sinners. .... [more]