Our plain man in reading this would make an important discovery. He would notice that "look" and "believe" were synonymous terms. "Looking" on the Old Testament serpent is identical with "believing" on the New Testament Christ. That is, the _looking_ and the _believing_ are the same thing. And he would understand that while Israel looked with their external eyes, believing is done with the heart. I think he would conclude that _faith is the gaze of a soul upon a saving God_.
When he had seen this he would remember passages he had read before, and their meaning would come flooding over him. "They looked unto him, and were lightened: and their faces were not ashamed" (Psa. 34:5). "Unto thee lift I up mine eyes, O thou that dwellest in the heavens. Behold, as the eyes of servants look unto the hand of their masters, and as the eyes of a maiden unto the hand of her mistress; so our eyes wait upon the Lord our God, until that he have mercy upon us" (Psa. 123:1-2). Here the man seeking mercy looks straight at the God of mercy and never takes his eyes away from Him till mercy is granted. And our Lord Himself looked always at God. "Looking up to heaven, he blessed, and brake, and gave the bread to his disciples" (Matt. 14:19). Indeed Jesus taught that He wrought His works by always keeping His inward eyes upon His Father. His power lay in His continuous look at God (John 5:19-21).
In full accord with the few texts we have quoted is the whole tenor of the inspired Word. It is summed up for us in the Hebrew epistle when we are instructed to run life's race "looking unto Jesus the author and finisher of our faith." From all this we learn that faith is not a once-done act, but a continuous gaze of the heart at the Triune God.
Believing, then, is directing the heart's attention to Jesus. It is lifting the mind to "behold the Lamb of God," and never ceasing that beholding for the rest of our lives. At first this may be difficult, but it becomes easier as we look steadily at His wondrous Person, quietly and without strain. Distractions may hinder, but once the heart is committed to Him, after each brief excursion away from Him the attention will return again and rest upon Him like a wandering bird coming back to its window.