Jesus washing his disciples' feet in John 13 symbolizes humble service, spiritual cleansing and an example to follow. During the Last Supper, Jesus took off his outer robe, tied a towel around his waist, and did the job of a house servant by washing his followers' dirty feet. Jesus showed that true greatness means serving others, not seeking power or status. The act mirrored his upcoming death, where he humbled himself completely to save humanity.