In this first episode of our new series, we discuss one of the most fundamental principles for unlocking God's Word, namely opening up the myriad word pictures and object lessons through which God grants us spiritual understanding. This is the first of (at least) two parts on this subject, and we look at such things as trees, bread, human physiology, the sun and moon, and a few other examples illustrating that THIS (physical things) is about THAT (spiritual things).