You cannot live by faith and go by the senses at the same time. You must choose either faith or sight. Yet he did not waver through unbelief regarding the promise of God, but was strengthened in his faith and gave glory to God, being fully persuaded that God had power to do what he had promised. God's Word overrules any facts. I like to use the word F.A.C.T. as an acronym for False Appearance Contradicting Truth.
Facts often do contradict truth.
God's Word is truth. It is not fact. Problems are facts. Facts can change. They change when we apply God's Truth, His Word, to the circumstances.