When the Potter has finished firing the vessel, it is ready for final inspection. He looks closely all over the vessel, to see if it has been ruined by cracking. The vessels that pass the inspection test are approved, meaning proven and found to be without cracks.2Cor 10:18 . For not he who commends himself is approved, but whom the Lord commends.  When a vessel did not pass inspection, it was cast out the shop into the Potters Field; it was called a castaway.   Paul said he strove to walk in integrity lest he became a castaway vessel.1Cor 9:27 But I discipline my body and bring it into subjection, lest, when I have preached to others, I myself should become castaway.  KJV . One man who did become a castaway was Judas Iscariot, who was finally broken, in the Potters Field.Mat 27:7 And they consulted together and bought with them the potter's field, to bury strangers in. 

Friend, are you in a test right now?  Pass you final inspection! Be faithful to God, keep integrity with people, hold you peace because the Potter is about to pour greater treasure into your life.  God never makes a great vessel except for a great purpose.