This document discusses how to cleanse one's heart and enlarge one's passion. It references several Bible passages about cleansing from impurities and idols, being given a heart of flesh instead of stone, and guarding one's heart. It then lists three ways to enlarge passion: pursuing things above rather than earthly things; giving generously as the poor widow did; and surrounding oneself with wise people who can sharpen each other. The overall message is about cleansing the heart and focusing it on God in order to grow one's passion.