This week's liturgy included the "Fishers of Men" gospel story, as well as the "Here I Am, Lord" story from Isaac. In both stories, God calls people out, to do good work, and in both stories they refuse. "But I have eaten unclean foods!" protests Isaac. God doesn't care. God gets him started.
That's what it's all about. We have a mission - to live a more compassionate life. None of us are there yet, but we cannot hide in our insufficiency. We have to get started.