Why is the serpent of brass significant in Numbers 21?

The serpent of brass in Numbers 21 serves as a powerful symbol of Christ's redemptive work. In this passage, God commanded Moses to fashion a serpent of brass, which represented the curse of sin. This serpent was lifted up on a pole, allowing those who were bitten by fiery serpents to look and be healed, illustrating how Christ would bear the curse of sin for humanity on the cross. This act reminds us that healing comes not through human works, but through looking to Christ in faith, who bore our sins and took upon Himself the punishment we deserved. The use of brass, which signifies judgment, underscores that Christ endured divine wrath for the sake of those He came to save.