This verse is a very vivid reminder of God’s sovereignty over man.  The prophet Isaiah wrote, “Woe to him who quarrels (or complains) with his Maker, to him who is but a potsherd among potsherds on the ground. (Isaiah 45:9) Well, that kinda puts us in our place doesn’t it?!   God is the potter and we are the clay…it’s as simple as that, but we humans don’t take kindly to being told what to do by anyone in authority, let alone God.  Our rebellious spirit bristles at God’s perceived supreme power over us.  But in Romans 9:20, Paul asks in amazement, “But who are you, O man, to talk back to God?  Shall what is formed say to Him who formed it, Why did You make me like this?”  We are like clay in the hand of the Master potter…and He will fashion us as He sees fit…His Will and Way always prevailing.