No one has greater love than this, to lay down one's life for one's friends. (John 15:13)
Friendship is a major theme throughout the Star Wars trilogy of films. It influences actions and provides motivation for characters to do things they otherwise wouldn't dream of doing.
It's what made Ben Kenobi engage in a lightsaber duel to the death with Darth Vader so that the Millennium Falcon and its passengers could escape from the Death Star.
It's what made Han Solo turn the Millennium Falcon around and come to Luke's aid during his bombing run on the Death Star, and what made him ride a Tauntaun out into the freezing Hoth night to find Luke when he hadn't returned to base.
It's what made Luke, against the advice of his mentor and teacher Yoda, leave the relative safety of Dagobah and fly straight into a trap on Bespin because he felt through the Force that Han, Leia, Chewbacca, and the droids were in danger.
It's what made Luke, Leia, Chewie, and Lando risk life and limb to break into Jabba the Hutt's fortress and relieve him of his prized wall decoration, the frozen body of Han Solo encased in carbonite.
Friendship is powerful. It is more powerful than the Dark Side of the Force and it's more powerful than any other form of evil. Friendship brings life, sometimes literally, as in many of the examples above. Even if my friends don't ever actually prevent me from being seriously harmed, though, they are still one of God's wonderful gifts that help make my world a brighter, happier, more life-filled place.