God: Son, I need you to go down to earth on a mission. You will be born as a baby. You will live to age 33. You will go around preaching my words and then you will be crucified on a cross.
Jesus: But dad, why?
God: Because I want to save some of the people down there. I have compassion for them and I want to love them and have fellowship with them. But I cannot stand what they have become of late. They ridicule the poor, they leave the sick to die, and they starve the hungry. They are not doing what I have commanded them to do.
Jesus: Some? Not all? But dad, if I cannot save them all, why bother trying?
God: Because Son, even if you manage to only get through to one and I can only save one, that is still one who will be saved. If you don't go, that one will be lost forever.
Jesus: Okay, dad, you're right. Is not that one worth more than a thousand if that one might go on to help do even greater things? Maybe that one that I help will turn around and help a thousand more.
God: Now you're thinking! Oh, and Son?
Jesus: Yes, dad?
God: I love You.
All for that one. Jesus came for that one. God sent His Son for that one.