If you find something unique in the world that you can greatly treasure, you'll want to keep it for yourself entirely for your own enjoyment. Christ is the only object that is different. After you find him to be your greatest treasure and satisfaction of your life, you'll want to share him with everyone else, for the joy is that great! It just shows that he has the profound power to free you and transform you into a selfless being – this is how amazing our God is! Pity the one who does not know him to have such life-changing power.