Num 21:9 - And Moses made a serpent of brass, and put it upon a pole, and it came to pass, that if a serpent had bitten any man, when he beheld the serpent of brass, he lived.
John 3:14-15 And 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
I've seen it suggested in other Bible forums that the brass serpent in the wilderness was a representation of sin, not a representation of salvation, primarily because a serpent is always symbolic of sin. The serpent didn't 'save' any of the Israelites per se, it was the understanding and acceptance of the sins they had committed that saved/healed them - not merely looking on the serpent (a physical manifestation of their sin).
Sorry if that was a bit of a disjointed thought...
In summary, did the serpent represent Christ (salvation) or sin?
Any insight into this?