Christ being lifted up, then, meant this, whatever else, that in His death sin was slain, its power to hurt ended. He being made sin for us, we are to argue that what we see done to Him is done to sin. Is He smitten, does He become accursed, does God deliver Him to death, is He at last slain and proved to be dead, so certainly dead that not a bone of Him need be broken? Then in this we are to read that sin is thus doomed by God, has been judged by Him, and was in the cross of Christ slain and put an end to--so utterly slain that there is left in it not any so faint a flicker or pulsation of life that a second blow need be given to prove it really dead.
When we strive to get a little closer to the reality and understand in what sense, and how, Christ represented sin on the cross, we recognise first of all that it was not by His being in any way personally tainted by sin. Indeed, had He Himself been in the faintest degree tainted by sin this would have prevented Him from representing sin on the cross. It was not an actual serpent Moses suspended, but a serpent of brass. It would have been easy to kill one of the snakes that were biting the people, and hang up its body. But it would have been useless. To exhibit one slain snake would only have suggested to the people how many were yet alive. Being itself a real snake, it could have no virtue as a symbol. Whereas the brazen serpent represented all snakes. In it each snake seemed to be represented. Similarly, it was not one out of a number of real sinners that was suspended on the cross, but it was one made "in the likeness of sinful flesh." So that it was not the sins of one person which were condemned and put an end to there, but sin generally.
This was easily intelligible to those who saw the crucifixion. John the Baptist had pointed to Jesus as the Lamb of God that taketh away the sin of the world. How does a Lamb take away sin? Not by instruction, not by example, but by being sacrificed; by standing in the room of the sinner and suffering instead of him. And when Jesus, Himself without sin, hung upon the cross, those who knew His innocence perceived that it was as the Lamb of God He suffered, and that by His death they were delivered.
Another point of analogy between the lifting-up of the serpent and the lifting-up of the Son of Man on the cross is to be found in the circumstance that in each case the healing result is effected through a moral act on the part of the healed person. A look at the brazen serpent was all that was required. Less could not have been asked: more, in some cases, could not have been given. If deliverance from the pain and danger of the snake-bite had been all that God desired, He might have accomplished this without any concurrence on the part of the Israelites. But their present agony was the consequence of their unbelief, and distrust, and rebellion; and in order that the cure may be complete they must pass from distrust to faith, from alienation to confidence and attachment. This cannot be accomplished without their own concurrence. But this concurrence may be exercised and may be exhibited in connection with a small matter quite as decisively as in connection with what is difficult. To get a disobedient and stubborn child to say, "I am sorry," or to do the smallest and easiest action, is quite as difficult, if it be a test of submission, as to get him to run a mile, or perform an hour's task. So the mere uplifting of the eye to the brazen serpent was enough to show that the Israelite believed God's word, and expected healing. It was in this look that the will of man met and accepted the will of God in the matter. It was by this look the pride which had led them to resist God and rely upon themselves was broken down; and in the momentary gaze at the remedy appointed by God the tormented Israelite showed his reliance upon God, his willingness to accept His help, his return to God.