Moshe made a serpent of brass, and set it on the standard: and it happened, that if a serpent had bitten any man, when he looked to the serpent of brass, he lived.
For being ignorant of God's righteousness, and seeking to establish their own righteousness, they didn't subject themselves to the righteousness of God.
and be found in him, not having a righteousness of my own, that which is of the law, but that which is through faith in Messiah, the righteousness which is from God by faith;