There is only one creature that God has made that ever doubts Him. The sparrows doubt not. They sweetly sing at night as they go to their roosts, though they know not where tomorrow’s meal shall be found. The very cattle trust Him, and even in days of drought, you have seen them when they pant for thirst, how they expect the water. The angels never doubt Him, nor the devils. Devils believe and tremble (James 2:19). But it was left for man, the most favored of all creatures to mistrust his God.
C.H. Spurgeon