BIBLICAL BOUNDARIES. GOD'S WISDOM FOR DEALING WITH DIFFICULT PEOPLE. God calls us to love people, but He also calls us to live in wisdom. Above all else, guard your heart, for everything you do flows from it. PROVERBS 4:23. 1. GUARD YOUR HEART. PROVERBS 4:23. Above all else, guard your heart, for everything you do flows from it. Protect your heart