“…guard your heart, for it is the wellspring of life.” Proverbs 4:23. One sinful act sometimes ruins a life.  Uzziah had been a marvelous king for nearly 50 years.  But he was smitten with leprosy for intruding into the work that God had reserved exclusively for priests.  It’s frightening to think that a single act can bring us down.  We should keep in mind, however, that an outward sin is usually preceded by sin in the heart.  We should judge every wrong thought as soon as it comes to our minds, recognizing that evil begins there.  If we keep our heart with all diligence, God will surely keep us from that one great sin. Master the sin in your heart before it masters you.