what it is in essence . It assumes the presence of faith and shows what it results in, rather than what it is. We will be wise to go just that far and attempt to go no further. We are told from whence it comes and by what means: “Faith is a gift of God,” and “Faith cometh by hearing, and hearing by the word of God.” This much is clear, and, to paraphrase Thomas à Kempis, “I had rather exercise faith than know the definition thereof.”
From here on, when the words “faith is” or their equivalent occur in this chapter I ask that they be understood to refer to what faith is in operation as exercised by a believing man. Right here we drop the notion of definition and think about faith as it may be experienced in action. The complexion of our thoughts will be practical, not theoretical.
In a dramatic story in the Book of Numbers faith is seen in action. Israel became discouraged and spoke against God, and the Lord sent fiery serpents among them. “And they bit the people; and much people of Israel died.” Then Moses sought the Lord for them and He heard and gave them a remedy against the bite of the serpents. He commanded Moses to make a serpent of brass and put it upon a pole in sight of all the people, “and it shall come to pass, that everyone that is bitten, when he looketh upon it, shall live.” Moses obeyed, “and it came to pass, that if a serpent had bitten any man, when he beheld the serpent of brass, he lived” ( Numbers 21:4–9 ).
In the New Testament this important bit of history is interpreted for us by no less an authority than our Lord Jesus Christ Himself. He is explaining to His hearers how they may be saved. He tells them that it is by believing. Then to make it clear He refers to this incident in the Book of Numbers. “As Moses lifted up the serpent in the wilderness, even so must the Son of man be lifted up: that whosoever believeth in him should not perish, but have eternal life” ( John 3:14–15 ).