Welcome to the Preached Word. Solomon's command in Proverbs 4:23 — "Keep thy heart with all diligence; for out of it are the issues of life" — cuts straight to the source of everything we say, do, and love, which is precisely why we are so reluctant to take it seriously. In this sermon, Dr. Frank Walker shows us that this command is not a burden to crush us but a grace-given call, made possible only because Jesus kept his heart perfectly in our place and now guards ours by his Spirit.