In the wake of the bombing at the Boston Marathon, I find the column I originally meant to write has changed. Because our next worship service falls on Earth Day this month, I thought I’d write about our need to protect the earth. Now I find myself wondering how we can learn to care for one another. Perhaps these are not exclusive themes: how we care for one another is intimately related to how we care for our earth. Years ago, I went to church with a man who was passionate about saving the Earth. In fact, he was so passionate about it that he tried to convince me I…