The fatal effects of sin can be removed only by the provision that God has made. The Israelites saved their lives by looking upon the uplifted serpent. That look implied faith. They lived because they believed God’s word, and trusted in the means provided for their recovery. So the sinner may look to Christ, and live. He receives pardon through faith in the atoning sacrifice. Unlike the inert and lifeless symbol, Christ has power and virtue in Himself to heal the repenting sinner.
– Patriarchs and Prophets, pg. 431