For even the Son of Man did not come to be served, but to serve, and to give his life as a ransom to many.  Mark 10:45
Jesus, the Son of God and God the Son, came to earth as a humble servant.  Jesus, with all of His power and might did not come to be served as He deserves, but by His love and grace, came down to serve us.  He served us by giving us a way to spend eternal life with Him even though we do not deserve it, nor can we earn it on our own merit.  He gave His life freely so that we might have eternal life.  He served us by being the bridge between God and Man.
A Christian life is not a religion, but a relationship.  And as followers of Christ, we should follow His life example to serve others as He served us.