People often say that someone who died in war or as a martyr "gave his life" for the cause. In one sense, that's true. But while reading Urchin and the Rage Tide, I came across a beautiful passage about this. (paraphrased)
You've already given your life for the island, every day. Now you're giving your death.
It's all about living sacrifice. If you don't give God every day, every moment of your life, why give him something he has control over anyway?