Before Christ promised the Holy Spirit, He gave a new commandment, and about that new commandment He said wonderful things. One thing was: 

"Even as I have loved you, so love ye one another." 

To them His dying love was to be the only law of their conduct and intercourse with each other. What a message to those fishermen, to those men full of pride and selfishness! “Learn to love each other," said Christ, "as I have loved you." And by the grace of God they did it. When Pentecost came, they were of one heart and one soul. Christ did it for them.And now He calls us to dwell and to walk in love. He demands that though a man hate you, still you love him. True love cannot be conquered by anything in Heaven or upon the earth. The more hatred there is, the more love triumphs through it all and shows its true nature. This is the love that Christ commanded His disciples to exercise.What more did He say? 

"By this shall all men know that ye are my disciples, if ye have love one to another" (John 13:35). 

You all know what it is to wear a badge. And Christ said to His disciples in effect: "I give you a badge, and that badge is love. That is to be your mark. It is the only thing in Heaven or on earth by which men can know me."Do we not begin to fear that love has fled from the earth? That if we were to ask the world: "Have you seen us wear the badge of love?" the world would say: "No; what we have heard of the Church of Christ is that there is not a place where there is no quarreling and separation." Let us ask God with one heart that we may wear the badge of Jesus' love. God is able to give it.