Jesus trusted in His heavenly Father. Thus, He would never patronize God by subjecting Him to a test to confirm His trustworthiness. God is faithful and true and He is the very essence of such attributes. While we may reasonably test countless other things that are uncertain, we do not test the One who Himself is the plumb line of faithfulness and truth. We learn from Jesus that we are not to test God, but instead, we are to trust in Him with all our heart.