Numbers 21 teaches us about sin, faith, salvation, and God’s miraculous provision. The Israelites complained against God and Moses, facing discipline when fiery serpents attacked. Their repentance brought a cure—Moses lifted a bronze serpent on a pole, and whoever looked on it in faith was healed. This symbol points to Jesus, who said, "As Moses lifted up the serpent, the Son of Man must also be lifted up." Like the Israelites bit by snakes, we are poisoned by sin, but salvation is freely offered through Jesus’ sacrifice. Later, Israel gained military victories over kings Sihon and Og, showing God’s protection as they journeyed toward the Promised Land. The lesson is clear: salvation is so simple—faith in God’s plan leads to healing, forgiveness, and new life.