There are many investments that one can make (stocks, real estate, collectibles, cryptocurrency, etc.). All of these have to do with financial growth and security in this life. Yet there are certain investments we are to make that are spiritual in nature, and these are most important. In this series, we are going to discuss some of these investments we are to make. In this fourth lesson, we are going to talk about real spirituality as opposed to “lukewarm” religion.