If we keep Jesus' commandments, we will abide in His love. That love, which is leading Him to Calvary at this point, is the only reason any of us as human beings have life. If we can do these things, we will be very different from the world. Different in a way that many people will find attractive when they see it is constant and genuine. The Father is glorified when people see this difference.
People gravitate toward things they like.
When they get courageous enough to start asking questions, they become fruit on the branch that is you. The Lord even tells us why He is imparting this bit of information. He wants to fill our lives with His joy. The unspeakable joy that comes when a coworker bows his or her head and quietly asks Jesus into their heart, or a friend, or a son or daughter is not of this world. It is a sharp contrast to the emotional struggles the disciples are going through during this instruction of Jesus.