In fact, he had everything to lose. He went out to support the very person who threatened his personal security and future as well as the avowed enemy of his father, the king. Jonathan recognized that true friendship meant a sacrificial love and commitment. He realized that a friend is not simply someone who can meet my need, but a friend is someone whose need I can meet. As a friend I do not look only at what I can gain in the relationship, but what I can give to another.
Christian friendship is sacrificial, involving costly commitment.
Commitment sacrifice love trust - the Christian Church needs to be marked with such friendship. The world is crying out for such genuine, caring relationships. David and Jonathan also encouraged each other. David could have easily given into despair and anger, but Jonathan went out of his way to encourage him. He consoled him and offered him hope and comfort in his time of crisis and need.