What does the Bible say about the brass serpent?

The brass serpent in Numbers 21:4-9 serves as a powerful symbol of God's healing and redemption. When the Israelites were bitten by fiery serpents as a consequence of their complaints against the Lord, God instructed Moses to make a bronze serpent and lift it on a pole. Anyone who looked at it in faith would be healed. This event foreshadows the ultimate healing found in Christ, as highlighted in John 3:14-15, where Jesus parallels Himself with the brass serpent, indicating that just as the serpent was lifted up, so must He be lifted up on the cross for the salvation of those who believe in Him.