A family was in a serious traffic accident. The youngest son, Mike, was seriously injured and needed blood. His big brother, Danny, was only 8-years-old, but had the same blood type. Danny's Dad explained carefully how important it was for Mike to have blood, and how great it would be if Danny could help out. There was silence for a while, then Danny said, "Yes, Daddy, I'll give my blood so Mike can get better." They put the needle in his vein and drew the blood they needed. Once the needle was back out, Danny looked up at his Dad, and with tears running down his cheeks said, "Daddy, when do I die?" It was only then that his Dad realized that Danny didn't know he was just giving some blood. He thought he was giving his life.
34 “A new command I give you: Love one another. As I have loved you, so you must love one another. 35 By this everyone will know that you are my disciples, if you love one another.” John 13:34-35
Greater love has no one than this: to lay down one's life for one's friends.