Members of the Knights of the Altar boys genuflect at the...

MANILA CATHEDRAL, MANILA, PHILIPPINES - 2016/03/24: Members of the Knights of the Altar boys genuflect at the front of the Altar of Manila Cathedral as Manila Archbishop Luis Antonio Tagle presides the religious rites. Maundy Thursday is the name given to the day on which Jesus celebrated the Passover with His disciples, known as the Last Supper. First, Jesus celebrated the Last Supper with His disciples and thereby instituted the Lords Supper, also called Communion. 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. (Photo by Josefiel Rivera/Pacific Press/LightRocket via Getty Images)