He never makes mistakes

"God never makes mistakes. But He often deals differently with His disciples. He lets them grope their way in the dark until they fully learn how blind they are, how helpless, how absolutely in need of Him. What His methods will be with you I cannot foretell. But you may be sure that He has a reason for everything He does. You may not understand why He leads you now in this way and now in that, but you may, nay, you must believe that perfection is stamped on His every act." ~E. Prentiss, Stepping Heavnward