The handle is purity and unselfishness. The three prongs are Serve, Love and Give of which Love is the middle prong, because it potentiates the other two. They work together, one potentiates the others. One cannot live without service and one cannot serve without love. And if there is love, one automatically gives.
Love is so abstract.
It can only be manifested outside through service and giving. These are the two aspects of manifested love. Gurudev was a great votary of service. For him service of humanity was worship of God. And every religion says we should worship God.